Bot

A derivative of the word “robot.” It usually pertains to (1) one or more compromised machines controlled by a bot master or herder for the purpose of spamming or launching DDoS attacks, and (2) an automated program coded with certain instructions to follow, which includes interacting with websites and humans via the use of Web interfaces (e.g. IMs). A collective of bots is called a botnet.

Synonym: zombie machine

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