Final answer:
A botnet is a network of compromised computers used for coordinated tasks controlled by a central server.
Explanation:
Botnet is an aggregation of compromised computers that are linked together to perform coordinated tasks under the control of a central server, known as the command and control server. These networks of infected machines can be used for various purposes, including launching DDoS attacks that can overwhelm targeted servers, making them unavailable to legitimate users.
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