Watering Hole Attack Home Cybersecurity Dictionary Watering Hole Attack Watering hole attacks happen when an attacker targets a specific group of users by infecting websites they frequent with malware. Watering hole attacks are rare, but they represent a major threat since they typically target organizations through their employees, partners, vendors or unsecured wireless networks. They can also be extremely difficult to detect. Related Terms Share: Seeking Clarity? View the Cybersecurity Dictionary for top terms searched by your peers. Back to the Dictionary How Can We Help? Let us know what you need, and we will have an Optiv professional contact you shortly.