Botnet is short for robot network. A botnet is a group of private computers that are infected by malicious software and controlled without the user's knowledge. A person's computer can fall victim to a botnet by downloading illegitimate software or by clicking on spam ads. The creator of a botnet can control many private computers remotely once those computers are infected. Botnets are often used to perform illegal activities such as fraud or identity theft. A person's private information can be at risk when their private computer becomes infected.
A zombie network is comprised of computers who are under control of a botnet. A person that created the botnet can remotely control the computers that are infected and spread malware and spam to others. By using zombies, a hacker can avoid detection since they are not using their personal computer to spread the infections.
The image above explains step-by-step, how a botnet attack works. The second image shows a very generic depiction of a zombie network. To find out more information about a botnet is, how it works, and how to prevent them you can watch the video below.
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