Which type of cyber attack takes control of a user's computer to perform unauthorized actions?

The correct answer, which refers to a botnet, signifies a network of compromised computers that are controlled by a malicious actor to perform various unauthorized activities. When a user's computer is infected and becomes part of a botnet, it can be remotely managed to send spam emails, participate in distributed denial-of-service (DDoS) attacks, or carry out other illicit tasks without the owner's knowledge.

Understanding what a botnet is crucial because it illustrates how attackers can leverage thousands of compromised systems simultaneously to achieve their objectives. This type of attack emphasizes the importance of securing devices against malware and ensuring that users employ protective measures, such as updated antivirus software and firewalls, to prevent their systems from being hijacked.

In contrast, phishing involves tricking users into providing personal information or credentials through deceptive communications, such as emails or messages, targeting the user rather than taking control of their system. Keylogging is a different type of attack, where software records keystrokes to capture sensitive information, but it does not necessarily imply full control over the computer. Ad fraud pertains to illicit activities in the online advertising space, primarily focusing on creating false impressions or clicks, rather than direct control of a user’s device.

By focusing on the characteristics of a botnet, it becomes