Understanding Network Broadcasts and Local Area Networks

by Andrew Grimes | Sep 24, 2026 | ALL

https://youtu.be/VSRHuavnVN4

Understanding how devices communicate within a network is an important part of building a strong networking foundation. Two concepts that come up frequently are network broadcasts and local area networks (LANs).

What Is a Network Broadcast?

There are times when a computer needs to communicate with all of the other devices on a network. This type of communication is called a broadcast.

With a hub, information that comes in through one port is forwarded out through all of the other ports. Every connected device receives the information, but that doesn’t necessarily mean every device will process it.

For example, if one device sends a message to a specific MAC address, all of the devices may receive the frame when a hub is being used, but only the device with the matching destination MAC address will pay attention to it.

A switch handles normal device-to-device communication differently, but there are still times when a message needs to be sent to every device on the network.

The Broadcast MAC Address

Ethernet provides a specific MAC address for broadcasts. The broadcast address consists of all Fs:

FF:FF:FF:FF:FF:FF

When a device sends a frame using this destination address, the message is intended for all devices on the network. Devices recognize the broadcast address and process the frame because the message is specifically addressed as a broadcast.

Broadcasting is an important part of how devices communicate within a network.

What Is a LAN?

Another fundamental networking concept is the LAN, or Local Area Network.

A LAN is a local network where devices have connectivity to one another. When we look at a group of interconnected devices, such as computers connected through a hub or switch, we are looking at a LAN.

There are also different ways the term LAN can be discussed. There is the concept of a LAN, meaning the local network itself, and there are protocols and standards that define how LANs communicate.

For the purposes of understanding networking, it is useful to start with the basic concept: a LAN connects devices together within a local area.

Collisions Within a LAN

LANs can be associated with network collisions, particularly when hubs are used.

A hub sends incoming information out to the other connected devices. If multiple devices attempt to communicate at the same time, their transmissions can collide. This is referred to as a collision domain.

Replacing a hub with a switch can largely eliminate these types of collisions.

That doesn’t mean that every LAN has collisions. Rather, collisions were a characteristic of the older network environments that used hubs.

Broadcasts and Security

Broadcasting also has implications for how information moves around a LAN.

When a hub is used, communication between two devices can be seen by the other devices connected to that hub because the hub forwards the information to all of its ports.

Using a switch reduces much of this unnecessary traffic because the switch can direct communication toward the appropriate device. However, broadcasts can still occur on a switched network.

When a device sends a frame to the broadcast MAC address, the broadcast is sent to all devices within that local network.

Where Does a LAN End?

A LAN needs a boundary between the local network and the larger network beyond it. This is where a router comes into play.

The router represents the edge of the LAN. Within the LAN, we can have local communication, collisions in certain network configurations, and broadcast traffic. The broadcast traffic remains within that local network rather than continuing indefinitely into larger interconnected networks.

This separation is important because imagine if all network traffic, collisions, and broadcasts were allowed to spread across the entire internet. The amount of traffic generated by broadcasts alone would be enormous.

Instead, networks are compartmentalized and segmented, with routers providing boundaries between different networks.

Multiple LANs

A larger network can contain multiple LANs.

For example, one group of interconnected devices can form one LAN, while another group of devices forms a separate LAN. Routers can connect these different networks and route information between them.

This gives us a way to think about networks at different levels: individual devices can communicate within a LAN, while routers connect those local networks to larger networks.

LAN Protocols and Standards

The transcript also introduces the IEEE 802 standards, which include protocols associated with local area networking.

This is an important distinction because the concept of a LAN and the protocols used to implement LAN technologies aren’t always exactly the same thing. Technologies associated with the 802 standards can also be used in connections between networks.

The key takeaway is to understand the basic concept first: a LAN represents a local area network, while networking standards and protocols define how technologies within these networks communicate.

Why Broadcasts and LANs Matter

Broadcasts and LANs are foundational networking concepts that help explain how devices communicate and how networks are structured.

A broadcast allows a device to communicate with all devices on a local network. The broadcast MAC address identifies a frame as being intended for everyone on that network.

A LAN provides the local environment where devices communicate, while switches, hubs, and routers influence how that communication takes place and where the boundaries of the network exist.

Understanding these concepts gives you a stronger foundation for learning more advanced networking topics and building the networking knowledge needed for an IT career.

If you’re looking to strengthen your networking skills, check out the free Networking Starter Experience linked below. It can help you build the core networking foundation and confidence you’ll use throughout your IT career.

How Devices Connect to a Network

by Andrew Grimes | Sep 3, 2026 | ALL

https://youtu.be/wjf5j2NeWCc

When you connect a computer to a network, there’s more happening than simply plugging in a cable or connecting to Wi-Fi. Your device needs a way to communicate with the network, and the network needs a way to move those signals between devices.

Two important pieces of this process are the network interface card (NIC) and the network device that connects multiple computers together, such as an Ethernet hub.

What Is Network Media?

For devices to communicate, information has to travel from one device to another across some type of network media.

There are three basic ways we can send these signals:

• Electrical signals through a conductor such as copper cable
• Light signals through fiber optics
• Radio signals through the air

Regardless of the method, the goal is the same: transfer information between devices.

Computers work with 1s and 0s, so those bits have to be represented as signals that can travel across the chosen media. With copper, for example, an electrical signal can represent a 1 while the absence of a signal can represent a 0. Radio communication uses more complex methods to represent those same bits.

Fiber optics takes a different approach by sending information using light.

The Role of the Network Interface Card

Your network interface card, or NIC, provides the interface between your computer and the network.

Computers work with digital information, but the network media doesn’t necessarily communicate in the same form. A NIC helps translate the computer’s 1s and 0s into signals that can travel across the network media and then converts incoming signals back into information the computer can understand.

The term “network interface card” comes from the days when networking functionality was commonly provided by a separate expansion card installed into a computer.

Today, the NIC is often built directly into the motherboard or system.

A computer may have multiple network interfaces. For example, a laptop might have:

• Ethernet
• Wi-Fi
• Bluetooth
• Other network interfaces

In Windows, you can view these interfaces through Network Connections. You can also see information about an active connection, including its connection status, speed, and other details.

MAC Addresses and IP Addresses

When looking at a network interface’s details, you’ll encounter different types of addresses.

One of these is the MAC address, also called the physical address or burned-in address. The network interface has a MAC address associated with it.

You’ll also see an IP address, which is used for network communication at the IP level.

These addresses serve different purposes, and understanding the difference between MAC addresses and IP addresses becomes increasingly important as you learn more about networking.

Connecting Multiple Devices

Once devices have network interfaces, we need something that allows those devices to communicate with each other.

One example is an Ethernet hub.

A hub provides multiple ports where devices can connect using Ethernet cables. When a device sends a signal into the hub, the hub takes that signal and broadcasts it out through the other ports.

For example, if one computer sends a message into Port 1, the hub sends that signal out through the other connected ports. The other devices receive the signal and determine whether the communication is intended for them.

This is one of the fundamental ideas behind Ethernet communication.

Hubs vs. Modern Switches

It’s important to note that Ethernet hubs aren’t commonly used in modern networks. Switches are generally used instead.

However, understanding hubs provides a useful way to learn how Ethernet communication works. Hubs were part of the earlier development of Ethernet, and their simple behavior makes the underlying concept easier to visualize.

A hub essentially says: “I received a signal here, so I’ll send it everywhere else.”

A switch is more intelligent about how it handles traffic and can make forwarding decisions rather than simply broadcasting everything to every port.

Putting It All Together

The process of networking devices starts with the ability to physically or wirelessly transmit information.

Your computer’s NIC provides the interface between the device and the network media. That media might use electrical signals, light, or radio waves to carry information.

From there, networking equipment such as hubs or switches provides a way for multiple devices to communicate.

Understanding these foundational concepts makes it easier to understand everything that comes later in networking. Before you can learn about routing, subnetting, IP addressing, or more advanced networking concepts, it’s important to understand the basic question:

How does information actually get from one device to another?

Building that foundation is an important step toward developing the networking skills you’ll use throughout an IT career.

If you’re ready to strengthen your networking fundamentals, check out the free networking starter experience to practice these core concepts and build your confidence with computer networking.

What Is Network Media? How Computers Send Data

by Andrew Grimes | Aug 27, 2026 | ALL

https://youtu.be/k0GVnwFNxWs

When we connect computers, phones, and other devices together, we need a way for those devices to communicate. But how does information actually travel from one device to another?

That’s where network media comes in.

Network media is the physical or wireless method used to transfer data between devices. At a basic level, there are three primary ways we can send information: electrical signals through a conductor, radio signals through the air, or light through a fiber.

The Three Ways We Can Send Data

Imagine that we have two computers that need to communicate with each other. Somehow, we need to get information from one computer to the other.

There are three basic options.

Copper Cable

The first option is to use a cable, typically a copper cable.

Copper is a conductor, which means we can move electrons through it. We can use changes in the electrical signal to represent the 1s and 0s that computers use to communicate.

For example, we can think of a signal being turned off as a 0 and turned on as a 1.

The actual technology used by networking equipment is much more sophisticated than simply turning electricity on and off, but this gives us a basic way to understand how information can travel through a copper cable.

Radio Signals

The second option is to use radio signals.

Instead of physically connecting the two devices with a cable, we can send information through the air using radio waves. Those waves can be manipulated to represent the 1s and 0s that make up our digital information.

This is one of the fundamental ideas behind wireless networking.

Your devices can communicate without a physical cable because information is being transmitted through the air.

Light

The third option is to use light.

We can send information by transmitting photons from one device to another. A simple example would be using a flashlight to communicate.

If we turned the light on and off in a specific pattern, we could create a code. Morse code is a simple example: short flashes represent dots, while longer flashes represent dashes.

Computers can use the same basic concept, except they can transmit signals far faster and use those signals to represent digital data.

This is the basic idea behind fiber-optic communication, where light travels through a fiber to carry information between devices.

How Do These Methods Represent Data?

Computers communicate using 1s and 0s, so network media needs some way to represent that digital information.

With a copper connection, electrical signals can represent the data.

With wireless networking, radio waves can be manipulated to represent the data.

With fiber optics, light is used to carry the data.

The underlying technology is different, but the goal is the same: move information from one device to another.

Why Does Network Media Matter?

Each type of network media has its own advantages and disadvantages.

Copper, radio, and fiber all provide different ways to move data, and the appropriate choice depends on the networking situation.

For now, the important thing to understand is that computers don’t simply send information from one device to another magically. There needs to be some form of media that carries the signal.

That media could carry electrons, radio signals, or photons.

Once you understand that basic concept, you have a foundation for understanding how devices actually communicate across a network.

Build Your Networking Skills

Understanding how data physically moves between devices is an important part of learning computer networking.

If you’re building your IT or cybersecurity career, having a strong networking foundation can make many of the concepts you’ll encounter later much easier to understand.

That’s why I created a free networking starter experience to help you build those foundational networking skills and gain confidence with the concepts you’ll use throughout your IT career.

If you’re ready to strengthen your networking skills, check out the free class linked below.

What Is a Network Protocol? A Beginner’s Guide to How Computers Communicate

by Andrew Grimes | Aug 20, 2026 | ALL

https://youtu.be/Ao71PjFuXF0

When two computers communicate, they don’t necessarily run the same operating system, use the same hardware, or even look anything alike. One might be a Windows computer, another might be running Linux, and another could be a smartphone.

So how do all of these different devices know how to communicate with each other?

The answer is network protocols.

What Is a Network Protocol?

A network protocol is a set of rules for communication between devices.

Think about it like having a conversation with someone. For the conversation to work, both people need to understand the language being used and follow certain rules about how the conversation happens.

Computers work in much the same way.

When a device communicates with another device, the protocol helps determine things like:

• How communication begins
• What information is sent
• The format of the message
• The order information is exchanged
• How the receiving device should interpret the information

Without these rules, different devices and applications wouldn’t have a consistent way to communicate.

Why Do We Need Protocols?

Imagine you’re building an application that connects to a server.

The application might run on a Windows laptop, an iPhone, or an Android device. The server could be running Linux.

These devices and platforms can be very different from one another.

Yet the application still needs to communicate with the server.

The solution is to establish a common set of communication rules.

Protocols provide that common language.

Instead of every application developer having to invent an entirely new way for their application to communicate, they can use protocols that already exist.

Protocols Define the Order of Communication

One important job of a protocol is defining what happens and in what order.

For example, imagine an application that wants to retrieve a list of songs from a server.

The communication might follow a process like this:

1. The client establishes communication with the server.
2. The server responds.
3. The client requests a list of songs.
4. The server sends the requested information back.

The protocol establishes the rules for this exchange.

It can determine what message comes first, what response should follow, and what happens next.

Without those rules, the two devices wouldn’t necessarily know what to expect from each other.

Protocols Define Message Formats

Protocols also help define how information is formatted.

Imagine the server is sending information about a song. That information might include:

• Song name
• Artist
• Album
• Album artwork
• Lyrics

The receiving application needs to know what each piece of information represents and where it appears in the message.

If the information arrives in the wrong order or isn’t formatted correctly, the application could interpret the data incorrectly.

For example, the application might accidentally treat the album name as the song title.

Protocols establish the structure that prevents this kind of confusion.

Computers Are Really Sending Ones and Zeros

It’s also important to remember that the information being exchanged between computers ultimately comes down to binary data — ones and zeros.

The information might eventually be displayed to us as a nicely formatted application interface, but that’s not what is actually traveling across the network.

The data is transmitted and processed according to the rules established by the protocols.

Protocols provide the structure that allows those ones and zeros to become meaningful information.

We Don’t Have to Invent Our Own Protocols

If you’re developing an application that needs to communicate across a network, you don’t normally have to create your own protocol from scratch.

There are already many established protocols designed to handle different types of communication.

Applications and services can use these existing protocols rather than reinventing the rules themselves.

This is one of the reasons networking can work at such a massive scale.

There Are Layers of Protocols

Another important concept is that network communication doesn’t rely on just one protocol.

There are actually layers of protocols working together to make communication happen.

Different protocols can handle different parts of the communication process.

We’ll get into those layers in more detail as we continue learning about networking, but for now, the important thing to understand is that protocols provide the rules that allow devices and applications to communicate.

Why Network Protocols Matter

Protocols are one of the fundamental concepts behind computer networking.

Every time devices communicate across a network, there are rules governing how that communication happens.

Whether you’re accessing a website, using an application, transferring information, or communicating with another computer, protocols are helping make that communication possible.

Understanding protocols is an important foundation for anyone learning networking or pursuing a career in IT or cybersecurity.

If you’re building your networking fundamentals, start by understanding the basic concepts — because these fundamentals will continue to come up as you learn more advanced networking topics.

What Are Windows Services? Understanding the Programs Running Behind the Scenes

by Andrew Grimes | Aug 13, 2026 | ALL

https://youtu.be/cOTM7s6Gx1U

When you turn on your computer, hundreds of small programs may start running in the background. These programs provide much of the functionality your computer needs to operate, even though you may never directly interact with them.

If you’ve ever opened Task Manager in Windows, you’ve probably noticed a long list of processes running on your computer. Some of them may be familiar, while others might be programs you’ve never heard of. So how does Windows know which programs to launch, when to launch them, and how to keep them running?

This is where Windows services come in.

What Is a Windows Service?

A service is a program that can run in the background on a Windows computer without requiring a user to manually launch it.

Programs can be started at different points in time. Some launch when the computer starts. Others launch when a user logs in. Still others may start when you open a particular application.

The problem is that some programs need to run regardless of whether a particular user is logged into the computer.

For example, you may have a program that needs to be running as soon as the computer starts. You don’t want to wait for someone to log in and manually launch it.

That’s one of the purposes of services.

A program can be configured as a service so that it can start automatically and continue running in the background.

Services Can Start Automatically

Windows provides different startup options for services.

Some services can be configured to start automatically when the computer starts. Others can be started manually when they’re needed. There are also services that are configured to start automatically but with a delay.

This gives Windows flexibility in determining when programs should start and how they should operate.

You can see these settings directly on a Windows computer.

Open the Windows menu and search for Services. This opens the Windows Services console, where you’ll find a list of services configured on the machine.

The console provides information about each service, including its description, whether it is currently running, and its startup type.

Services Can Run Without You Launching Them

One of the interesting things about services is that many of them may already be running even though you haven’t opened them yourself.

You might see services running under different accounts, including local services, local system accounts, and network services.

This is important because these programs aren’t necessarily tied to the user sitting at the computer. They’re designed to provide functionality that the system or other programs may need.

That’s what makes services different from simply opening a program yourself.

Why Services Matter

Think about everything your computer needs to do in the background.

There are programs providing functionality to the operating system, programs supporting networking, and programs that need to be available even when nobody is actively using the computer.

If every one of those programs required a user to manually launch it, managing a computer would become extremely difficult.

Services provide a way to have those programs running in the background when they’re needed.

They help make sure that important functionality is available when the system needs it—not just when a user remembers to start a particular program.

What About Linux and UNIX?

Windows isn’t the only operating system that uses background services.

Linux and UNIX systems have similar functionality, although they use different terminology. The programs that are launched as services on Linux or UNIX systems are commonly referred to as daemons.

The terminology is different, but the basic idea is similar: programs can run in the background to provide functionality without requiring a user to manually launch them.

Seeing Services for Yourself

If you’re using Windows, take a look at the Services console on your own computer.

You’ll probably find a long list of services, many of which are already running. You can examine their descriptions and startup types to get a better idea of what’s happening behind the scenes.

The next time you open your computer and everything seems to simply work, remember that there’s a lot happening in the background. Services are one of the mechanisms Windows uses to keep those programs running and provide the functionality your computer depends on.

Understanding services is another important piece of building your foundational IT knowledge—because learning what’s happening behind the scenes helps you understand how computers actually work.

How to Convert Decimal to Binary (The Easy Way)

by Andrew Grimes | Aug 6, 2026 | ALL

https://youtu.be/Fv5cfNAYkzs

If you’re learning networking, cybersecurity, or IT, converting decimal numbers to binary is one of the most important foundational skills you’ll develop. While it might seem intimidating at first, the process is actually straightforward once you understand how binary numbers are organized.

In this lesson, we’ll walk through a simple step-by-step method for converting decimal numbers into binary using place values.

Understanding Binary Place Values

Just like the decimal system uses place values (ones, tens, hundreds, thousands), binary also uses place values—but each position is a power of two instead of a power of ten.

The common binary place values are:

• 128
• 64
• 32
• 16
• 8
• 4
• 2
• 1

Each position can only contain one of two values:

• 1 = This value is included.
• 0 = This value is not included.

The goal is to determine which place values add up to your decimal number.

Step-by-Step Conversion Process

The easiest method is to start with the largest place value and work your way down.

Ask yourself these questions for each column:

• Is the decimal number greater than or equal to this value?
• If yes, write a 1 and subtract that value.
• If no, write a 0 and move to the next column.

Repeat until you reach the 1’s place.

Example: Converting 43 to Binary

Let’s convert 43.

Start at 128:

• 128? No → 0
• 64? No → 0
• 32? Yes → 1 (43 − 32 = 11)
• 16? No → 0
• 8? Yes → 1 (11 − 8 = 3)
• 4? No → 0
• 2? Yes → 1 (3 − 2 = 1)
• 1? Yes → 1

The final binary number is:

00101011

Every 1 represents a place value that contributes to the final decimal number.

Example: Converting 186 to Binary

Let’s try a larger number.

Start with 186:

• 128? Yes → remainder 58
• 64? No
• 32? Yes → remainder 26
• 16? Yes → remainder 10
• 8? Yes → remainder 2
• 4? No
• 2? Yes → remainder 0
• 1? No

The completed binary number is:

10111010

By simply working from the largest place value downward, even larger numbers become manageable.

Why This Method Works

Instead of memorizing binary values, you’re simply breaking a decimal number into the largest powers of two possible.

Think of it like making change with coins—you always use the largest coin you can before moving to the next smallest denomination.

Each binary digit simply answers the question:

“Do I need this place value?”

If yes, write a 1.

If no, write a 0.

Practice Makes It Stick

Understanding the process is only the beginning. The real skill comes from repetition.

The more numbers you convert, the more quickly you’ll begin recognizing patterns and performing conversions without needing to think through every step.

Start with smaller numbers, then gradually work your way up to larger values until the process becomes second nature.

Final Thoughts

Decimal-to-binary conversion is one of the core skills used throughout networking and cybersecurity. Whether you’re working with IP addresses, subnetting, or other low-level networking concepts, being comfortable moving between decimal and binary will make everything else much easier to understand.

The key is to remember one simple strategy:

Start with the largest binary place value, work your way down, subtract when you can, and record each decision as a 1 or a 0.

With enough practice, converting decimal numbers to binary becomes fast, accurate, and almost automatic.

How to Count in Binary: A Beginner’s Guide for IT and Cybersecurity

by Andrew Grimes | Jul 30, 2026 | ALL

https://youtu.be/u-ghKV__MoU

If you’re getting started in IT, networking, or cybersecurity, one of the most important foundational skills you can learn is counting in binary. It may seem intimidating at first, but once you understand the pattern, binary becomes surprisingly logical.

In this guide, we’ll break down binary counting step by step using simple examples so you can build a solid foundation for more advanced topics like subnetting, IP addressing, hexadecimal, and computer architecture.

Why Binary Matters

Computers don’t understand decimal numbers the way humans do. Instead, computers operate using only two values: 0 and 1.

Every piece of information inside a computer—from text and images to videos and IP addresses—is ultimately represented using combinations of these two digits.

Because of that, understanding binary is one of the most valuable skills you can develop early in your IT journey.

Understanding Decimal Counting

Before jumping into binary, it helps to think about how our everyday decimal number system works.

In decimal, each position represents a power of ten:

• Ones
• Tens
• Hundreds
• Thousands

As you count from 0 to 9, you can continue adding digits in the ones column. Once you reach 10, there is no room for another digit, so you carry that value into the tens column and start the ones column over at zero.

This carrying process repeats throughout the entire decimal system.

Binary Uses the Same Idea

Binary follows the exact same concept—but instead of having ten possible digits (0–9), it only has two:

• 0
• 1

That means each column fills much faster.

Instead of representing:

• Ones
• Tens
• Hundreds

Binary columns represent:

• 1
• 2
• 4
• 8
• 16
• 32
• 64
• 128

Each column is worth double the previous one.

Counting in Binary

Binary counting follows a repeating pattern.

Notice what happens after every column fills—it resets back to zero while carrying a one into the next column, just like decimal.

Once you understand this carrying process, binary counting becomes much easier.

Think of Binary Like Stacking Blocks

One of the easiest ways to visualize binary is by imagining stacking blocks.

Every time a column becomes full, you group those blocks together and move them into the next column.

Instead of groups of ten like decimal, binary groups everything into pairs.

This visualization helps explain why binary numbers seem to “grow” so quickly compared to decimal numbers.

Recognizing Binary Patterns

As you practice, you’ll begin noticing repeating patterns.

The rightmost bit alternates every number:

0 1 0 1 0 1 0 1

The next column changes every two numbers:

00 11 00 11

The third column changes every four numbers:

0000 1111

Each column doubles the length of its repeating pattern.

Recognizing these patterns makes binary much easier to read and understand.

Another Way to Visualize Binary

Some people understand binary better by thinking of it like an odometer.

On a car, the rightmost wheel changes first. Once it rolls over, it causes the next wheel to advance.

Binary works exactly the same way.

Instead of rolling from 0 through 9, each position only switches between 0 and 1 before carrying into the next position.

This mental model helps many students quickly understand why binary counting works the way it does.

Practice Makes Perfect

Like any new language, binary becomes easier with repetition.

The more you practice counting, recognizing patterns, and understanding carries, the more comfortable you’ll become.

This foundation will make learning topics like:

• IP addressing
• Subnetting
• IPv6
• Hexadecimal
• Computer architecture
• Networking

much easier later on.

Final Thoughts

Binary is one of the first building blocks of every IT career. Although it looks unfamiliar at first, it’s built on the same counting principles you’ve used your entire life.

Once you understand that binary simply uses two digits instead of ten, the patterns begin to make sense. Spend time practicing, recognize the repeating sequences, and you’ll quickly develop the confidence needed for more advanced networking and cybersecurity topics.

Why More Transistors Make Computers Faster (And Why Numbers Like 128, 256, and 512 Keep Appearing)

by Andrew Grimes | Jul 16, 2026 | ALL

https://youtu.be/1ZEyOXHj5hY

If you’ve ever wondered why computer storage always seems to come in sizes like 128 GB, 256 GB, or 512 GB, or why older gaming consoles proudly advertised being 8-bit, 16-bit, or 64-bit, the answer starts with one tiny electronic component:

The transistor.

Understanding what a transistor is—and how billions of them work together—is one of the best ways to truly understand how computers operate.

What Is a Transistor?

A transistor is an incredibly small electronic switch.

Like a light switch, it has two possible states:

• On
• Off

When electricity is allowed to flow, the transistor is considered on. When electricity is blocked, it’s off.

Inside a computer, we represent these two states as:

• 0 = Off
• 1 = On

Those simple 1s and 0s become the language every computer understands.

How Are Computer Processors Made?

Modern processors don’t start out looking like the CPU sitting inside your computer.

Instead, manufacturers begin with a silicon wafer—a perfectly polished circular disk made from highly purified silicon.

Using an incredibly precise manufacturing process called photolithography, microscopic transistor patterns are projected onto the wafer. These patterns are then etched into the silicon layer by layer.

Each completed wafer contains dozens—or even hundreds—of processor designs.

Once the manufacturing process is complete:

1. The wafer is cut into individual chips.
2. Each chip is tested for quality.
3. Working chips are placed into protective packages.
4. Those packaged chips become the CPUs installed in laptops, desktops, servers, and gaming consoles.

It’s remarkable to think that something you can hold in the palm of your hand contains billions of microscopic switches.

Why More Transistors Mean More Computing Power

Early processors contained only a few thousand transistors.

Today’s processors contain billions.

Why does that matter?

Because transistors are the building blocks of every calculation your computer performs.

The more transistors engineers can fit onto a processor, the more complex circuits they can build.

That allows processors to:

• Perform more calculations simultaneously
• Execute instructions more quickly
• Include multiple processing cores
• Add larger caches for faster memory access
• Improve performance while using less power

In general, more transistors equal more capability.

While clock speed, architecture, cache design, and software optimization all influence performance, transistor count remains one of the biggest reasons modern computers are dramatically more powerful than systems from just a few decades ago.

From Transistors to Logic Gates

A single transistor can only act as a switch.

By combining multiple transistors together, engineers create logic gates.

Logic gates perform simple decision-making operations based on binary inputs.

Common logic gates include:

• AND
• OR
• NOT
• XOR

These tiny building blocks are then combined into larger circuits that perform increasingly complex tasks.

For example, combining multiple logic gates creates an adder circuit, which allows a processor to add binary numbers together.

Millions—and eventually billions—of these interconnected circuits are what give modern CPUs their incredible computing power.

Why Everything Becomes Binary

Since every transistor can only be on or off, every piece of information inside a computer must eventually be represented using those two states.

That means computers store everything as combinations of 1s and 0s, including:

• Letters
• Numbers
• Pictures
• Music
• Videos
• Games
• Websites

Even something as simple as the letter A has a binary representation.

Images are stored by assigning binary values to colors, while audio becomes binary representations of sound waves.

No matter what you’re doing on a computer, underneath it all is binary.

What Does “8-Bit” Actually Mean?

If you grew up playing retro video games, you’ve probably heard terms like:

• 8-bit
• 16-bit
• 32-bit
• 64-bit

These numbers referred to how much binary information a processor could handle at one time.

For example:

• The Nintendo Entertainment System used an 8-bit processor.
• The Sega Genesis featured a 16-bit processor.
• The original PlayStation moved to 32-bit.
• The Nintendo 64 proudly advertised its 64-bit processor.

As processors became capable of handling more bits simultaneously, they could perform more advanced calculations, enabling better graphics, richer gameplay, and more complex software.

Why Do 128, 256, and 512 Keep Showing Up?

Now we can answer one of the biggest questions beginners often have.

Why do technology products constantly use numbers like:

• 128
• 256
• 512

The answer lies in binary.

Each transistor has two possible states.

Adding another binary digit doesn’t increase possibilities by one—it doubles them.

Here’s how that growth looks:

• 1 bit = 2 possibilities
• 2 bits = 4 possibilities
• 3 bits = 8 possibilities
• 4 bits = 16 possibilities
• 5 bits = 32 possibilities
• 6 bits = 64 possibilities
• 7 bits = 128 possibilities
• 8 bits = 256 possibilities
• 9 bits = 512 possibilities

These are called the powers of two, and they appear everywhere in computing because computers are fundamentally built around binary.

Why the Powers of Two Matter

Understanding the powers of two makes many IT concepts much easier to learn.

You’ll encounter these numbers in topics like:

• Binary numbers
• Hexadecimal
• Computer memory
• Storage capacities
• IP addressing
• Subnetting
• Networking
• Computer architecture

Once you recognize the pattern, many concepts that initially seem confusing begin to make much more sense.

Practice the Powers of Two

One of the best ways to remember the powers of two is through repetition.

That’s exactly why I created Double Trouble, a free interactive game where every click doubles the current number.

Before you begin, you guess how many clicks it will take to reach a target number. Then you see how close your estimate was.

It’s a simple but surprisingly effective way to build intuition for exponential growth and the powers of two.

Final Thoughts

Every computer—from your smartphone to massive cloud servers—relies on billions of tiny transistors switching on and off at incredible speeds.

Those microscopic switches form logic gates.

Logic gates create circuits.

Circuits build processors.

Processors execute software.

And because everything ultimately comes down to binary, understanding transistors also helps explain why numbers like 128, 256, and 512 appear everywhere in technology.

Once you understand the transistor, many of the patterns found throughout computer science, networking, and cybersecurity begin to click into place.

The Most Efficient Way to Break Into IT: A Simple System That Actually Works

by Andrew Grimes | Jul 9, 2026 | ALL

https://youtu.be/u61VvU39_xg

Breaking into IT can feel overwhelming. Everyone seems to have a different opinion about which certifications to earn, what skills matter most, or where you should start. The result is often information overload, causing many aspiring IT professionals to jump from one course to another without making meaningful progress.

The truth is that success in IT isn’t about collecting random certifications—it’s about following a proven system.

After more than 25 years of helping students launch careers in technology, I’ve found that the most effective path can be broken down into three simple systems:

• Three Levels
• Three Learning Phases
• Three Passes for Exam Preparation

When combined, these create a roadmap that makes learning more efficient, more enjoyable, and ultimately more successful.

Step 1: Build Your Foundation with the Three Levels

Before worrying about specialization, focus on mastering the three core domains of IT.

These are commonly represented by the industry’s most recognized entry-level certifications:

• CompTIA A+ – Computing fundamentals
• CompTIA Network+ – Networking
• CompTIA Security+ – Security

Many people refer to these certifications as the “IT Trifecta,” but what’s really important isn’t the certifications themselves—it’s the knowledge they represent.

Think of these three domains as the pillars supporting your IT career.

• Computing teaches you how systems work.
• Networking teaches you how systems communicate.
• Security teaches you how to protect those systems.

Once these foundations are in place, you can specialize in areas like cybersecurity, cloud computing, networking, databases, DevOps, or IT support.

You don’t necessarily need to complete all three before landing your first IT job. In fact, many people begin working after developing a strong foundation in the first domain. However, continuing through all three creates a much stronger long-term career path.

Step 2: Stop Memorizing and Start Learning

One of the biggest mistakes people make is treating certification exams as the learning process.

Most certification courses focus almost entirely on helping you answer exam questions. While that may help you pass a test, it often leaves you with only fragments of understanding instead of seeing how everything works together.

Instead, divide your learning into three distinct phases.

Phase 1: Learn

This is where real understanding happens.

Forget about exam objectives for a while and focus on understanding how technology actually works. Explore concepts, build things, and see the “big picture.”

Learning should be enjoyable—not an endless memorization exercise.

Phase 2: Study the Certification Objectives

Once you understand the material, begin studying the specific objectives required for your certification exam.

At this point, you’re simply organizing knowledge you already understand rather than trying to memorize unfamiliar concepts.

Phase 3: Prepare for the Exam

Only after you’ve learned the material and studied the objectives should you begin preparing specifically for the certification test.

Now you’re practicing how you’ll be tested instead of trying to learn everything at the same time.

This makes exam preparation significantly less stressful and much more effective.

Step 3: Use a Three-Pass System for Practice Exams

Practice tests are one of the most valuable tools when preparing for certification exams—but only if you use them correctly.

Many students simply take practice tests repeatedly until their score improves.

A better approach is to track your understanding question by question.

When reviewing a question, ask yourself:

• Did I genuinely understand the answer?
• Did I simply guess correctly?
• Would I confidently answer this correctly again?

The goal is to answer each question correctly multiple times because you understand it—not because you remember the answer.

Questions you’ve mastered can be set aside, allowing you to spend your time focusing only on the areas where you still need improvement.

This creates a much more efficient study process and gives you greater confidence on exam day.

Certifications Are a Tool—Not the Goal

It’s important to remember that certifications are not the only path into IT.

They’re valuable because they demonstrate knowledge and provide structure, but employers ultimately care about your ability to understand technology and solve problems.

If you focus first on building real understanding, certifications become much easier to earn—and your skills become much more valuable in the workplace.

Create a System That Works for You

Success in IT isn’t about studying harder.

It’s about studying smarter.

By focusing on:

• The three foundational IT domains
• A learning-first approach through the three phases
• A structured three-pass exam preparation system

you can dramatically improve both your learning experience and your chances of passing certification exams on the first attempt.

Most importantly, you’ll develop knowledge that stays with you long after the exam is over—giving you the foundation needed for a successful, long-term career in IT.

Every journey into IT begins with a single step. Once you understand the roadmap, all that’s left is to start moving forward.

What Does IT Actually Do? (It’s Much More Than Fixing Computers)

by Andrew Grimes | Jul 2, 2026 | ALL

https://youtu.be/Dq8MNiCq79g

Ask someone what an IT professional does, and you’ll probably hear something like:

“They fix computers.”

While that’s certainly part of the job, it’s only a small piece of a much larger picture. In reality, IT professionals are responsible for designing, maintaining, and protecting the technology that businesses rely on every single day.

Ironically, the better an IT team does its job, the less people notice they’re there.

The Biggest Misconception About IT

Most people only interact with IT when something breaks. Maybe the Wi-Fi stops working, a computer won’t boot, or someone gets locked out of their account.

Because of this, many assume that IT is simply “computer repair.”

The truth is that fixing individual computers is just one specialty within the field. Behind every business is an enormous amount of technology that has to be installed, configured, monitored, updated, secured, and maintained.

Without IT professionals, those systems simply wouldn’t function.

A Minecraft Server Is a Great Example

One of the easiest ways to understand IT is to think about a Minecraft server.

Most players only see the game itself. They log in, join their friends, and start playing. They never think about what makes that experience possible.

Behind the scenes, someone has to:

• Install the server
• Configure it
• Keep it updated
• Monitor performance
• Allocate storage and resources
• Restart services when problems occur
• Create backups
• Troubleshoot issues

That person didn’t create Minecraft.

They didn’t design the game.

They simply manage the infrastructure that allows everyone else to use it.

That’s exactly what many IT professionals do every day.

Businesses Depend on Much More Than Computers

A Minecraft server is fairly simple compared to what even a small business needs.

Businesses rely on dozens of critical systems, including:

• Email servers
• Web servers
• Directory services
• Network switches
• Routers
• Firewalls
• Wireless networks
• Cloud services
• Storage systems
• Backup solutions

Every one of these systems requires ongoing maintenance to stay secure, reliable, and available.

As organizations grow, so does the complexity of their infrastructure.

That’s why larger companies have entire IT departments instead of just one technician.

IT Is Made Up of Many Different Specialties

Another misconception is that everyone in IT does the same job.

In reality, IT offers many different career paths, including:

• IT Support / Help Desk
• Systems Administration
• Networking
• Cybersecurity
• Cloud Computing
• Databases
• Artificial Intelligence Infrastructure
• DevOps
• Automation
• Project Management
• IT Leadership

Each specialty focuses on different technologies, but they all work together to keep an organization’s technology running smoothly.

The Better IT Performs, the Less People Notice

Here’s one of the most interesting parts of working in IT:

When everything works perfectly, nobody thinks about IT.

Emails send successfully.

Websites stay online.

Applications load quickly.

Wi-Fi connects instantly.

Users simply expect everything to work.

Because there aren’t any problems, many people assume there isn’t much work happening behind the scenes.

But that’s exactly the point.

Maintaining technology requires constant monitoring, updates, maintenance, backups, performance tuning, and security improvements. When those tasks are done well, users never see them.

It’s only when something fails that IT suddenly becomes visible.

In many ways, success in IT means creating an experience where nobody notices your work at all.

Why IT Continues to Grow

Technology isn’t becoming simpler.

Businesses continue to adopt cloud platforms, artificial intelligence, automation, remote work, cybersecurity solutions, and increasingly complex infrastructure.

Every new technology creates additional systems that need to be deployed, secured, maintained, and supported.

That means the demand for skilled IT professionals continues to grow across nearly every industry.

Whether you’re interested in networking, cybersecurity, cloud computing, or systems administration, there are more opportunities than ever to specialize in the area that interests you most.

Final Thoughts

IT is far more than fixing computers.

It’s the profession responsible for keeping the digital world running.

From servers and networks to cloud platforms and cybersecurity, IT professionals build and maintain the infrastructure that allows businesses—and the people who work in them—to operate every day.

And perhaps the greatest irony of all?

The better they do their job, the less anyone realizes they’re doing it.

How to Get Experience when You Can’t Get a Job

by Andrew Grimes | Jun 25, 2026 | ALL

https://youtu.be/Z9RE2HDrEuE

One of the biggest challenges aspiring cybersecurity professionals face is the experience gap. Most entry-level technical positions require some level of experience, but how do you gain experience when nobody will hire you without it?

The good news is that experience doesn’t only come from a traditional job. There are many ways to build practical skills, demonstrate your abilities, and create a resume that stands out to employers.

Knowledge vs. Skill: Understanding the Difference

Before discussing how to gain experience, it’s important to understand the difference between knowledge and skill.

Knowledge is understanding a concept. Skill is the ability to apply that knowledge to accomplish a task.

This distinction matters because most certifications, degrees, and training programs primarily measure knowledge. Even certifications that include performance-based questions are often testing whether you understand a process rather than whether you can successfully perform it in a real-world environment.

Employers are ultimately hiring for skill. They want to know whether you can solve problems, configure systems, secure networks, and contribute to their organization.

That’s why practical experience is so valuable.

Not All Training Is Created Equal

There are several ways to learn cybersecurity, and each approach provides a different level of hands-on experience.

Free Resources

Free videos, articles, tutorials, and online content are excellent for building foundational knowledge. However, most free resources focus more on concepts than practical application.

Certification Training

Certification courses often include labs and exercises that allow students to practice what they’re learning. These programs provide a stronger balance of knowledge and skill development.

Professional Cybersecurity Programs

Programs designed specifically to prepare students for cybersecurity careers typically include more hands-on labs, projects, and real-world scenarios. These programs generally place a greater emphasis on practical skills.

Degree Programs

Many degree programs combine theory with extensive hands-on activities. When designed correctly, they can provide significant opportunities to develop technical skills while building a strong educational foundation.

Build a Home Lab

One of the most effective ways to gain practical experience is by creating a home lab.

A home lab gives you the opportunity to work with real systems, troubleshoot problems, and learn through experimentation. Whether you’re configuring networks, deploying servers, testing security tools, or learning operating systems, the hands-on experience is invaluable.

The good news is that you don’t need expensive enterprise hardware. Many home labs can be built using older computers, virtual machines, or affordable networking equipment.

The goal isn’t to create a perfect environment. The goal is to learn by doing.

Create Personal Projects

Once you have a home lab, take things a step further by building projects.

Personal projects demonstrate initiative and provide real examples of your skills. You might:

• Build a home server
• Create automation scripts
• Deploy a security monitoring solution
• Host a game server
• Create backup systems
• Practice vulnerability assessments

Projects give you something tangible to discuss during interviews and showcase on your resume.

Employers often value candidates who can demonstrate what they’ve built and learned on their own.

Participate in Capture-the-Flag Events

Capture-the-Flag (CTF) competitions are another excellent way to develop cybersecurity skills.

These events present challenges that require participants to solve security-related problems, exploit vulnerabilities, analyze systems, and think like attackers and defenders.

CTFs are valuable because they:

• Build technical problem-solving skills
• Expose you to real cybersecurity concepts
• Help you learn new tools and techniques
• Demonstrate initiative and passion for the field

Many cybersecurity professionals began their careers by participating in CTFs and similar competitions.

Volunteer Your Skills

If you’re looking for one of the strongest ways to gain real-world experience, consider volunteering.

Nonprofits, community organizations, schools, and small businesses often need technical assistance but lack the budget for dedicated IT staff.

Volunteering provides multiple benefits:

• Real-world experience
• Resume-building opportunities
• Professional references
• Networking opportunities
• Confidence working with actual users and organizations

Unlike lab exercises, volunteering allows you to solve problems that genuinely matter to people and organizations.

Pursue Internships

Internships are often the closest thing to a full-time job without actually being one.

They provide:

• Real-world experience
• Exposure to professional environments
• Mentorship opportunities
• Industry connections
• Potential income

While internships can be competitive, they offer tremendous value because you’re working on actual business systems and learning how organizations operate.

For many professionals, internships serve as the bridge between education and full-time employment.

Gain Experience Through Your Current Job

Many people overlook opportunities that already exist in their workplace.

If you’re currently in a non-technical role, volunteer to help with technology-related tasks whenever possible.

If you’re already working in IT, look for opportunities to assist with more advanced projects. Offer to help system administrators, participate in server maintenance, assist with directory services, or contribute to infrastructure projects.

Small opportunities often lead to larger responsibilities over time.

Accept the First Step

Many aspiring cybersecurity professionals focus exclusively on landing their dream role immediately.

Instead, focus on gaining experience.

Your first position may not be your ideal job. That’s okay.

Every role helps build the skills, experience, and professional credibility needed to reach the next level. As your experience grows, new opportunities become available.

Think of your career as a progression rather than a single destination.

The Cybersecurity Snowball Effect

Building a cybersecurity career is much like rolling a snowball downhill.

At first, progress feels slow. You’re working hard to gain knowledge, build skills, and find opportunities.

But as you gain experience, things begin to accelerate.

Your resume becomes stronger. Your network grows. Employers become more interested. New opportunities appear more frequently.

Over time, the experience you’ve accumulated starts generating even more opportunities.

That’s the snowball effect.

The hardest part is getting started. Once you begin building experience consistently, momentum starts working in your favor.

Final Thoughts

Breaking into cybersecurity can feel challenging, especially when job postings require experience you don’t yet have. However, experience can be built in many ways beyond traditional employment.

Home labs, personal projects, capture-the-flag competitions, volunteering, internships, and workplace opportunities can all help you develop the skills employers are looking for.

Focus on gaining practical experience wherever possible. Every project, every lab, every volunteer opportunity, and every internship contributes to your growth.

The goal isn’t just to learn cybersecurity. The goal is to demonstrate that you can apply what you’ve learned—and that’s what ultimately opens doors in the industry.

How to Get Jobs in Cybersecurity

by Andrew Grimes | Jun 18, 2026 | ALL

https://youtu.be/GtmQa1H_Lmc

Breaking into cybersecurity can feel overwhelming. Whether you’re pursuing your first cybersecurity role or transitioning from another technical field, you’re competing against dozens—or sometimes hundreds—of applicants for the same position.

As someone with more than 25 years of experience in technology and over 15 years hiring cybersecurity professionals, I’ve reviewed thousands of resumes and interviewed candidates at every stage of their careers. While every organization has a slightly different hiring process, the core principles of what makes a candidate stand out remain remarkably consistent.

The Biggest Hiring Challenge

One of the most important stages of the hiring process happens before you ever speak to a recruiter or hiring manager.

In one recent hiring cycle, I opened a position on a Thursday and had more than 140 applicants by Monday morning. At that point, the job posting was closed and I began reviewing resumes.

The reality is that hiring managers often spend only a few seconds reviewing each resume during the initial screening phase. The challenge isn’t just being qualified—it’s making sure your qualifications are noticed.

The question becomes:

How do you get your resume to the top of the stack?

What Hiring Managers Are Really Looking For

Many candidates assume hiring decisions are based solely on technical skills. Technical knowledge is important, but it’s only one part of the equation.

When evaluating candidates, I generally focus on three key areas:

1. Technical Aptitude

This includes:

• Technical knowledge
• Relevant training
• Certifications
• Hands-on experience
• Ability to learn new technologies

At a basic level, I need confidence that a candidate can perform the technical aspects of the job or quickly develop the necessary skills.

2. General Professional Skills

These are the skills that make someone reliable in any workplace:

• Showing up on time
• Communicating effectively
• Being prepared for meetings
• Following through on commitments
• Working well with others

Strong professional habits often separate good employees from great ones.

3. Motivation and Self-Sufficiency

This is frequently the most overlooked category.

I want to know:

• Is this person motivated to learn?
• Can they work independently?
• Will they take initiative?
• How much supervision will they require?

A highly motivated candidate with average technical skills can often outperform someone with stronger technical credentials but poor work habits and low initiative.

The Employee Value Equation

When hiring, I often think about a simple input-output equation.

Every employee requires some level of investment:

• Salary
• Training
• Mentorship
• Management time
• Team support

In return, they provide output through their work, productivity, and contributions to the organization.

The strongest employees tend to be those who create significant value while requiring less oversight and management. They ask good questions, learn quickly, take ownership of their responsibilities, and help move projects forward.

This doesn’t mean employers expect perfection. New employees should ask questions and seek guidance. The goal is to demonstrate growth, initiative, and the ability to become increasingly self-sufficient over time.

How Resumes Are Evaluated

When reviewing resumes for technical positions, I generally prioritize three factors.

Experience Comes First

Relevant experience is typically the strongest indicator of future success.

If a candidate has already performed the type of work required for the role, they immediately move higher on my list.

Experience demonstrates more than knowledge—it demonstrates practical application.

Education Comes Next

Formal education can provide a strong foundation and shows commitment to learning.

A degree isn’t always required, but it can strengthen your application and help demonstrate technical competency.

Certifications Support the Process

Certifications are valuable, but they are usually not enough on their own.

Certifications demonstrate knowledge and commitment to professional development. However, they don’t always prove a candidate can apply that knowledge in real-world situations.

That’s why certifications tend to supplement experience rather than replace it.

The Experience Catch-22

Many aspiring cybersecurity professionals face the same challenge:

“How do I get experience if jobs require experience?”

It’s a common frustration.

The good news is that there are many ways to build relevant experience outside of a traditional cybersecurity role. Home labs, volunteer projects, internships, technical projects, and community involvement can all help demonstrate practical skills.

The key is finding opportunities to apply what you’re learning rather than focusing exclusively on collecting certifications.

Why Networking Matters

One of the most effective ways to stand out is through networking.

Attending conferences, joining cybersecurity communities, participating in local meetups, and building professional relationships can help you bypass some of the initial resume screening process.

When people know who you are and understand the value you bring, they’re often more willing to advocate for you or provide opportunities that aren’t available through traditional job applications.

Networking allows employers to see more than just a resume. It gives them insight into your communication skills, motivation, professionalism, and passion for the field.

Final Thoughts

Breaking into cybersecurity isn’t just about earning certifications or submitting more applications. Success comes from developing a combination of technical skills, professional habits, practical experience, and meaningful industry connections.

If you want to stand out from the crowd, focus on becoming the type of employee organizations want to invest in—someone who is motivated, reliable, adaptable, and continuously learning.

Technical skills may get your foot in the door, but your work ethic, mindset, and ability to create value are what ultimately help you build a successful cybersecurity career.

Cybersecurity Explained Simply

by Andrew Grimes | Jun 11, 2026 | ALL

https://youtu.be/x5lTz4JyMXw

If you’re new to cybersecurity, you’re not alone in feeling overwhelmed.

Cybersecurity is a massive field with dozens of career paths, hundreds of frameworks, and an ever-growing list of threats and vulnerabilities. For many aspiring professionals, the biggest challenge isn’t learning cybersecurity—it’s figuring out where to start.

The good news is that cybersecurity becomes much easier to understand when you break it down into three core areas. Whether you’re studying for your first certification, exploring career options, or simply trying to understand how organizations stay secure, these three areas provide a solid foundation.

Why Cybersecurity Feels So Complicated

One reason cybersecurity can feel intimidating is the sheer size of the field.

There are more than 50 common cybersecurity job titles, each with different responsibilities and skill requirements. Organizations also rely on numerous security frameworks, standards, and best practices to protect their systems. On top of that, security teams must monitor hundreds of thousands of known vulnerabilities that could potentially impact their environments.

With so much information available, it’s easy to lose focus and wonder what you should actually be studying.

Fortunately, most cybersecurity responsibilities can be grouped into three primary categories:

1. Understanding threats and adversaries
2. Architecting security
3. Security management and operations

Let’s explore each one.

1. Understanding Threats and Adversaries

When most people think about cybersecurity, this is what comes to mind.

They imagine hackers attempting to gain unauthorized access to systems, steal data, deploy malware, or disrupt operations. Understanding these threats is a critical part of cybersecurity because organizations need to know what they’re defending against before they can build effective protections.

Security professionals use various models and frameworks to study attacker behavior. These models help organizations understand how attacks occur, identify weaknesses, and develop strategies to reduce risk.

This area often includes:

• Threat intelligence
• Threat hunting
• Penetration testing
• Vulnerability research
• Adversary analysis

Many beginners are attracted to careers such as ethical hacking or penetration testing, and for good reason—they’re exciting and highly visible roles.

However, it’s important to understand that these positions are often more specialized and less common than many people realize. Smaller organizations may not have dedicated threat intelligence or penetration testing teams, while larger organizations often reserve these roles for experienced professionals.

Even if you don’t pursue one of these careers, learning about threats is still one of the best places to start your cybersecurity education because it helps you understand why security controls exist in the first place.

2. Architecting Security

Once you understand the threats, the next step is designing systems that can defend against them.

Security architecture focuses on building secure environments from the ground up. This includes designing networks, systems, applications, and infrastructure with security in mind from the beginning.

Examples of security architecture include:

• Designing secure networks
• Implementing firewalls
• Creating access control strategies
• Developing security baselines
• Building secure cloud environments

Think of security architecture as creating the blueprint for a secure organization.

Cybersecurity professionals often help define the requirements and strategy, while technical IT teams may handle the actual implementation. For example, a cybersecurity team may determine the need for network segmentation and firewall policies, while network engineers configure and deploy those solutions.

Security architecture provides the foundation that helps organizations reduce risk before problems occur.

3. Security Management and Operations

While architecture focuses on building secure systems, security operations focuses on keeping them secure over time.

This is where many cybersecurity professionals spend a significant portion of their careers.

Even the best-designed security program can fail if it isn’t properly maintained. Systems must be monitored, updated, reviewed, and improved continuously.

Common responsibilities within security operations include:

• Vulnerability management
• Patch management
• Risk management
• Identity and access management
• Security awareness training
• Incident response
• Change management
• Vendor risk management
• Compliance management
• Auditing and assessments

Consider patch management as an example. Most organizations understand that systems need regular updates, but devices and applications can easily be overlooked. Security operations teams help identify these gaps and ensure that security controls remain effective over time.

This ongoing management is often where cybersecurity delivers some of its greatest business value.

How Cybersecurity Roles Vary by Company Size

The size of an organization often determines how specialized cybersecurity roles become.

In smaller organizations, cybersecurity professionals may wear multiple hats and handle a variety of responsibilities across threat analysis, security architecture, and operations.

In larger enterprises, roles become much more specialized. One person may focus entirely on threat intelligence, while another manages identity and access management, and another oversees compliance programs.

Understanding this distinction can help you choose the type of environment that best fits your interests and career goals.

Building Your Cybersecurity Foundation

For anyone entering the field, the most important step is developing a strong understanding of these three core areas:

• Threats and adversaries
• Security architecture
• Security management and operations

This is why entry-level certifications often cover a broad range of cybersecurity topics rather than focusing on a single specialization. Before you can become an expert in one area, you need to understand how all the pieces fit together.

As your career progresses, you can begin specializing in the areas that interest you most.

Final Thoughts

Cybersecurity doesn’t have to be overwhelming.

Instead of trying to learn every framework, tool, and job role at once, focus on understanding the three pillars of the profession: threats, architecture, and operations.

Once you understand how attackers operate, how secure systems are designed, and how organizations maintain security over time, the rest of cybersecurity becomes much easier to navigate.

Whether your goal is threat intelligence, security engineering, risk management, or security operations, these three areas provide the roadmap for building a successful cybersecurity career.

Why Cybersecurity Exists

by Andrew Grimes | Jun 4, 2026 | ALL

https://youtu.be/LsZIHM7UaEA

Why Cybersecurity Exists: Understanding the Real Purpose of Cybersecurity

When most people think about cybersecurity, they picture hackers breaking into networks while cybersecurity professionals race to stop them. While that image isn’t completely wrong, it only scratches the surface of what cybersecurity really is.

The truth is that cybersecurity is not just about stopping hackers. At its core, cybersecurity exists to protect businesses by managing risk.

Understanding this changes the way you think about cybersecurity careers, security decisions, and what organizations actually need from cybersecurity professionals.

Cybersecurity Is About Protecting the Business

A lot of people enter cybersecurity thinking the entire job revolves around defending systems from attackers. But businesses do not invest in cybersecurity simply because hackers exist.

Businesses invest in cybersecurity because risk threatens their ability to operate, generate revenue, and serve customers.

Cybersecurity helps organizations reduce the probability or impact of problems that could harm the business. That includes external cyber threats, but it also includes many other risks that people often overlook.

A strong cybersecurity professional understands that security decisions must support the business as a whole.

Why Businesses Spend Money on Cybersecurity

Cybersecurity is expensive. Security tools, infrastructure, training, staffing, and compliance programs all require significant investment.

So why would a business spend money on cybersecurity?

The answer usually comes from two types of pressure:

Internal Pressure

Businesses exist to make profit. Every decision ultimately ties back to either:

• Increasing revenue
• Reducing expenses

Cybersecurity supports both of these goals by reducing costly incidents, downtime, data loss, and operational disruptions.

A well-designed cybersecurity program can save a company enormous amounts of money over time.

External Pressure

Organizations are also influenced by outside forces, including:

• Laws and regulations
• Customer expectations
• Vendor requirements
• Industry standards

Many businesses must meet certain security requirements simply to operate within their industry or maintain customer trust.

Cybersecurity Is Bigger Than Hackers

One of the biggest misconceptions about cybersecurity is that every security incident involves an attacker.

In reality, many security incidents happen because of internal issues.

Some of the most common examples include:

• Human error
• Misconfigured systems
• Equipment failures
• Environmental problems
• Process breakdowns

For example, a system outage may not happen because of a cyberattack at all. It may happen because someone accidentally changed a configuration setting incorrectly.

A server failure could result from overheating caused by an HVAC problem.

An earthquake or power outage could physically damage infrastructure and impact operations.

These are all cybersecurity concerns because they affect the organization’s ability to operate securely and reliably.

Risk Management Is the Core of Cybersecurity

At its foundation, cybersecurity is really about risk management.

Cybersecurity professionals work to either:

• Reduce the likelihood of something bad happening
• Reduce the impact if it does happen

That shift in perspective is important.

Beginners often focus entirely on stopping attackers. More experienced professionals start thinking in terms of risk reduction. But true cybersecurity professionals go one step further — they consider both the risk and the business impact.

That means asking questions like:

• What risks matter most to the business?
• Which systems are most critical?
• What security investments provide the most value?
• How do we balance protection with usability and cost?

The best cybersecurity decisions are not always the most aggressive security decisions. They are the decisions that best support the organization’s goals while reducing meaningful risk.

The Difference Between a Beginner and a Professional

Someone new to cybersecurity may focus only on technical threats and hacking techniques.

A trained cybersecurity professional understands risk management.

But an experienced cybersecurity professional understands both risk and business operations.

That difference matters.

When cybersecurity professionals understand business objectives, they:

• Make better security decisions
• Communicate more effectively with leadership
• Gain credibility inside the organization
• Create security strategies that actually support growth

Cybersecurity is not just a technical role. It is also a business role.

The Growing Need for Cybersecurity Professionals

Organizations today face increasing technology risks, growing compliance requirements, and expanding digital environments.

As a result, there is a strong demand for cybersecurity professionals who understand both security and business strategy.

Companies are looking for professionals who can:

• Assess risk
• Protect systems
• Improve processes
• Support business operations
• Build practical security strategies

The industry needs professionals who can think beyond tools and understand the bigger picture.

Final Thoughts

Cybersecurity is much more than stopping hackers.

It exists to protect businesses, reduce operational risk, support employees and customers, and help organizations continue operating successfully in a world driven by technology.

When you understand cybersecurity from a business and risk perspective, the entire field starts to make more sense.

And that understanding is what separates someone who simply knows security tools from someone who can become a true cybersecurity professional.

Cybersecurity Reality Check: What Cybersecurity Is Really About

by Andrew Grimes | May 28, 2026 | ALL

https://youtu.be/c7NY8Tm0Mkw

When most people think about cybersecurity, they picture a hoodie-wearing hacker furiously typing away while security professionals race to stop the attack. While that image makes for great movies and social media clips, it only scratches the surface of what cybersecurity actually is.

The truth is, cybersecurity is far more strategic, business-focused, and people-driven than most realize. Once you understand that, the entire industry starts to make a lot more sense.

Cybersecurity Is About Trade-Offs

One of the biggest misconceptions about cybersecurity is the idea that maximum security is always the goal.

Technically, the safest network in the world would be one that is completely unplugged. No internet. No users. No outside access.

But there’s a problem with that approach: nobody could actually use it.

Real cybersecurity is about balancing three things:

• Security
• Usability
• Cost

Organizations need systems that are secure, but they also need employees, customers, and clients to actually use those systems efficiently. Security controls that slow everyone down or make systems unusable can hurt the business just as much as a cyber attack.

That’s why cybersecurity professionals constantly evaluate trade-offs. Every security decision affects users, workflows, and budgets.

The CIA Triad: The Foundation of Security

One of the most important concepts in cybersecurity is the CIA Triad:

• Confidentiality — Protecting sensitive information from unauthorized access
• Integrity — Ensuring data remains accurate and trustworthy
• Availability — Making sure systems and data are accessible when needed

Most people focus heavily on confidentiality because that’s what gets attention in the news. But availability is just as important.

If your systems are secure but employees can’t access them, the business suffers.

Cybersecurity professionals must constantly balance these priorities while considering real-world business needs.

Perfect Security Doesn’t Exist

Another reality of cybersecurity is that perfection is impossible.

Think about castles centuries ago. At one point, castles were considered nearly impossible to penetrate. Today, modern technology could destroy one almost instantly.

Cybersecurity works the same way.

Threats evolve constantly. Attackers adapt. Technology changes.

Security isn’t about creating an impenetrable system. It’s about reducing risk, increasing resilience, and staying ahead of evolving threats as much as possible.

That means cybersecurity is never “finished.” It’s an ongoing process of improvement and adaptation.

Most Cyber Attacks Aren’t Sophisticated

Hollywood often portrays hackers as genius-level coders using advanced techniques to break into systems.

In reality, many cyber attacks rely on simple tools, weak passwords, poor configurations, or human mistakes.

Many successful attacks happen because:

• Someone clicked a phishing email
• A system was misconfigured
• Software wasn’t updated
• Access permissions were poorly managed
• Processes failed internally

This is why cybersecurity is much bigger than simply buying expensive security tools.

A company can have advanced firewalls and security software and still experience major security incidents if their people and processes are weak.

Cybersecurity Is Bigger Than Technology

A great cybersecurity professional doesn’t just think about tools.

They think about systems.

That includes:

• People
• Processes
• Technology

Cybersecurity professionals look at how everything interacts together and where weaknesses might appear across the organization.

For example:

• How do employees access sensitive data?
• What happens if someone makes a configuration mistake?
• Are security policies actually being followed?
• Do employees understand phishing risks?
• Are backup procedures reliable?

Many security failures happen internally, not because an elite hacker bypassed every defense.

That’s why cybersecurity requires both technical thinking and strategic thinking.

Most Security Incidents Don’t Involve “Hackers”

One of the biggest surprises for people entering cybersecurity is learning that many security incidents are caused by internal mistakes rather than external attackers.

Common causes include:

• Misconfigured systems
• Poor change management
• Human error
• Weak operational processes
• Lack of training

A single configuration mistake can take down critical systems faster than many external attacks.

This is why operational discipline and strong processes matter so much in cybersecurity.

Most Cybersecurity Professionals Aren’t Hackers

Another myth is that every cybersecurity professional spends their day hacking systems.

While ethical hackers and penetration testers are important, they represent only one area of the field.

Most cybersecurity careers focus on areas like:

• Security architecture
• Risk management
• Security operations
• Compliance
• Incident response
• Governance
• Infrastructure security
• Identity and access management

Strong cybersecurity professionals understand threats, but they also understand how to design secure systems and manage security operations effectively.

The Three Major Areas of Cybersecurity

A well-rounded cybersecurity program typically focuses on three major areas:

1. Threats and Adversaries

Understanding attackers, vulnerabilities, and risks.

2. Security Architecture

Designing systems and infrastructure that reduce risk and improve protection.

3. Operations and Management

Managing processes, monitoring systems, responding to incidents, and maintaining long-term security.

Many organizations place heavy value on architecture and operational security because they provide the greatest long-term impact.

Cybersecurity Is a Long-Term Career

Cybersecurity isn’t about chasing quick money or becoming a movie-style hacker overnight.

It’s a long-term profession built on:

• Problem solving
• Continuous learning
• Adaptability
• Strategic thinking
• Communication
• Operational discipline

The good news is that cybersecurity offers incredible opportunities for people willing to learn and grow over time.

And perhaps the most important realization is this:

You do not need to be a genius hacker to succeed in cybersecurity.

You simply need to understand how security, business, technology, people, and processes all work together.

That’s what real cybersecurity is all about.

How Hard Is Cybersecurity REALLY?

by Andrew Grimes | May 21, 2026 | ALL

https://youtu.be/46_rzwsSMuU

Why a Career in Cybersecurity Is Hard — And Why That’s a Good Thing

A career in cybersecurity is difficult. There’s no way around it. Breaking into the field takes effort, patience, and persistence. But the real challenge of cybersecurity is probably not what most people think it is.

Many people assume cybersecurity is only for technical geniuses or elite hackers. They imagine endless coding, impossible math, and people who have been obsessed with computers since childhood. While cybersecurity certainly has technical elements, that’s not what makes the career difficult for most people.

The real challenge is the journey.

Why Cybersecurity Pays So Well

Think about it like this:

Imagine there’s a button that gives money every time someone presses it. If the button is sitting in the middle of a city sidewalk, everyone would press it. Eventually, the reward would lose value because it’s too easy to access.

Now imagine that same button is placed on top of a mountain in another state. Suddenly, fewer people are willing to go after it. Make the journey even harder, and the number of people willing to pursue it becomes even smaller.

That’s exactly why cybersecurity salaries are high.

The average salary for many jobs in the United States might hover around $65,000 per year, while cybersecurity professionals often average well above $100,000 annually. High salaries usually signal one thing: the path is harder to reach.

Not impossible. Just harder.

You Don’t Need to Be a Genius

One of the biggest misconceptions about cybersecurity is that you need extraordinary intelligence to succeed.

You don’t need advanced math skills.
You don’t need to be a programming prodigy.
You don’t need to know everything on day one.

Most cybersecurity roles require practical problem-solving, consistency, communication, and a willingness to keep learning over time.

The field is broad. There are analysts, engineers, architects, compliance specialists, incident responders, consultants, and many other roles. Some are deeply technical. Others focus more on process, operations, or risk management.

What matters most is progression.

Cybersecurity Is Built Step by Step

Cybersecurity isn’t usually a career people jump directly into overnight. It’s often an extension of a broader IT career path.

Many professionals begin by learning:

• Basic computer systems
• Networking
• Operating systems
• Security fundamentals
• Troubleshooting
• IT support concepts

Over time, those foundational skills grow into specialized cybersecurity knowledge.

That’s important because it means the complexity of cybersecurity doesn’t hit all at once. The knowledge is built gradually through experience and consistent learning.

The challenge isn’t mastering everything immediately.

The challenge is staying committed long enough to grow into the role.

The Biggest Problem: There’s No Single Path

One reason cybersecurity feels overwhelming is because there’s no universal roadmap.

There are:

• College degrees
• Certifications
• Online courses
• Bootcamps
• Free resources
• Self-study paths
• Mentorship programs

Every path has pros and cons. What works for one person may not work for another.

For beginners, this creates confusion. People waste time trying to figure out:

• What should I learn first?
• Which certification matters most?
• Do I need a degree?
• Should I specialize immediately?
• How do I get experience?

The lack of clarity causes many people to quit before they ever gain momentum.

Cybersecurity Requires Delayed Gratification

This may be the hardest part of the journey.

Cybersecurity is rarely a “quick money” career. It takes time to build the necessary skills and experience. Many people want immediate rewards, but cybersecurity tends to reward long-term commitment.

That’s why patience matters.

The people who succeed are often the ones willing to:

• Learn consistently
• Accept entry-level experience
• Build skills gradually
• Stay focused during slow progress
• Think long-term

Success in cybersecurity usually compounds over time.

The Pressure Is Real

Cybersecurity professionals often work on real-world problems with real consequences.

Systems go down.
Businesses lose money.
Critical services stop working.
Security incidents happen at inconvenient times.

Sometimes that means troubleshooting a system late at night under pressure while knowing other people are depending on you.

That pressure can absolutely make the job difficult.

But it also makes the work meaningful.

Many cybersecurity professionals enjoy the sense of responsibility and purpose that comes with protecting systems, solving problems, and helping organizations stay operational.

The difficulty and the reward are closely connected.

Breaking Into the Industry Is Often the Hardest Part

Ironically, one of the hardest parts of cybersecurity is simply getting the first opportunity.

There’s strong demand for cybersecurity professionals, but entry-level positions are highly competitive because everyone is trying to get their foot in the door.

That first role matters.

Once someone gains real-world experience, many more opportunities begin to open up. But reaching that first step often requires persistence, strategy, and a clear understanding of the path forward.

Is Cybersecurity Worth It?

If you want a career that is easy, stress-free, and instantly rewarding, cybersecurity may not be the right fit.

But if you:

• Enjoy learning
• Want meaningful work
• Are willing to grow over time
• Can stay committed through challenges
• Want strong long-term career potential

then cybersecurity can be an incredibly rewarding profession.

The difficulty isn’t usually about intelligence.

It’s about consistency, patience, and the willingness to stay on the path long enough to succeed.

Is Cybersecurity Still Worth It in 2026?

by Andrew Grimes | May 15, 2026 | ALL

A lot of people are trying to break into cybersecurity right now, and many of them are getting frustrated.

Not because cybersecurity is a bad career.

But because their expectations don’t match reality.

Cybersecurity can absolutely be an amazing career:

• Strong salaries

• High demand

• Constant learning

• Challenging work

• Lots of growth opportunities

But here’s the part many people miss:

Cybersecurity is usually NOT an entry-level field.

Most entry-level security roles still expect:

• technical skills

• troubleshooting ability

• IT knowledge

• some real experience

That’s why many people struggle after getting a certification and immediately applying for security jobs.

The people who succeed long-term are usually the people willing to:

• build real technical skills

• understand how systems actually work

• gain experience over time

• play the long game

Certifications and training can help.

But skills and experience are what ultimately create opportunities.

So when people ask:

“Is cybersecurity worth it?”

I think the better question is:

“Are you willing to take the path required to become good at it?”