A botnet, short for “robot network,” is a network of compromised , often referred to as “bots” or “zombies,” that are under the control of a single entity, the . These compromised computers are typically infected with malicious software, known as , which allows the botmaster to control them remotely. Botnets are frequently used to launch DDoS attacks, overwhelming a target’s or network infrastructure with a flood of traffic, rendering it unavailable to users. In a botnet-powered DDoS attack, a network of compromised computers floods a target with overwhelming traffic to disrupt its .
Botnets use compromised computers to send out large volumes of emails. The botmaster controls these infected computers, issuing commands for email content and distribution. Spam emails often contain attempts or malware, and techniques like email spoofing make it challenging to filter out malicious emails. Furthermore, botnets are controlled by a central entity that infects computers and uses techniques like to steal usernames and passwords. Stolen credentials are sent to a central server, where they may be sold or used for unauthorized access and financial gain.
In addition to these activities, botnet click fraud involves infected computers generating automated clicks on online , aiming to inflate ad revenue at the expense of advertisers. Botnets are also used to provide services, allowing malicious actors to anonymize their online activities. In this context, compromised computers within the botnet act as proxies, relaying internet traffic on behalf of the user, which can be exploited for various illicit purposes. Moreover, botnet data theft involves a network of compromised computers that are controlled by a cybercriminal, allowing the attacker to extract sensitive such as personal data and login credentials.
Finally, botnet cryptojacking involves using a network of compromised computers to secretly mine without the owners' knowledge. Malicious actors deploy malware on these devices, turning them into mining tools that contribute power. The decentralized and distributed nature of botnets makes it challenging to trace and block these operations effectively.
