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Watering Hole

A watering hole attack compromises a third-party website frequently visited by members of a target organization, using it as a vector to deliver malware and gain access to the intended network.

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About this video

A watering hole attack is an indirect, targeted intrusion technique in which adversaries compromise external websites known to be frequented by members of a specific organization or group. Instead of attempting to breach a hardened corporate network directly, attackers identify a weaker point in the target's broader digital environment — a third-party site that employees trust and visit regularly — and plant malicious code there. When users from the target organization visit the compromised site, they unknowingly pick up the malware and carry it back into the internal network, giving the attacker a foothold they could not have obtained through a frontal assault. The name draws from predator behavior in nature: rather than searching a vast landscape for prey, a predator positions itself at a watering hole where prey will inevitably gather. In cybersecurity, the logic is identical. Attackers stake out the digital spaces their targets habitually occupy and weaponize those spaces, turning routine user behavior into an attack vector. This makes watering hole attacks particularly dangerous because they exploit normal, expected activity rather than requiring users to take any obviously suspicious action. Defending against watering hole attacks requires a combination of endpoint protection, network monitoring, and browser security controls, since the threat originates outside the organization's direct control. Security teams should also monitor for anomalous outbound traffic and apply strict patching practices, as these attacks frequently rely on browser or plugin vulnerabilities to execute malicious payloads on the victim's machine.

What you'll learn

Explain how a watering hole attack works by describing how adversaries compromise third-party websites to gain indirect access to a targeted organization

What's covered

Watering Hole Attack

Animal Kingdom Analogy
- Predators vs. Prey
- Desert Oasis Concept
- Predator Waits at Watering Hole
How the Attack Works
- Target Has Strong Defenses
- Compromise Frequently Visited Site
- Victim Picks Up Virus
- Attacker Gains Business Access
Real World Example
- Company with Robotics Program
- External Hosted Website Targeted
Key Concept
- Indirect Targeting Strategy
- Adversaries Compromise Outside Sites

Key terms

Watering Hole Attack: An attack where an adversary compromises a third-party website frequently visited by members of a target organization in order to infect those users and gain indirect access to the organization.
Threat Actor: An individual or group responsible for a security incident or attack.
Exploit: A piece of software or technique that takes advantage of a vulnerability to gain unauthorized access or cause harm.
Malware: Software specifically designed to disrupt, damage, or gain unauthorized access to a system.
Vulnerability: A weakness in a system, application, or process that can be exploited by a threat actor.

Topics

Watering Hole Attack Social Engineering Malware Delivery Threat Intelligence Web Security Cybersecurity

Transcript

If we're targeting a specific business and we're trying to get a foothold into it, it might actually be better if we target something else instead. Maybe another website that we know is visited by the people that are within the organization. This is what's called a watering hole.

The Analogy

In the animal kingdom, you have predators and preys. The predators eat the prey. Now, think of a desert, and think of the vast amount of land that's really dry and not much water at all. But every once in a while, you find an oasis, a hole that has water inside of it, and that's a collection point for all of those animals. All the animals need water, so they come down to that water to drink it at these watering holes.

Where do you think a predator is going to set up camp? Where do you think they're going to look for their next meal? They could wander the vast amount of desert and just hope that they run across an animal, or they can go to the watering hole, where they're going to see animals drinking out of this water, and that's where they can attack to find their next meal.

The Watering Hole Attack

In cyber security, we have a watering hole attack. The idea is the same thing: maybe there's this company that you want to target that has too high of defenses that we can't penetrate it. But we also know that some of the users of this company frequent a different website. For instance, maybe this company has a robotics program, and the robotics program uses a certain website that they host things out of. So what we can do, rather than attacking the company itself, is actually attack the website that these people frequent often, and then the next time they visit they're going to pick up the virus and then take that into the business, and suddenly we have access into the business.

It's called the watering hole effect because it's the same type of thing. We've got users within the company that are visiting these websites, and what we're doing is we're staking out these websites in order to leverage that company that we're targeting.

So our attack card is that adversaries are compromising websites that specific groups frequently visit, and we are targeting that group or that company, and so therefore we're targeting this website that's an outside source. So that's how a watering hole attack works.

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