A bot

A bot is the software that allows executing a command that issued by software that controls it. A single bot is installed in one computer, multiple bots form a collection known as a botnet.

Botnets can be used to perform denial of service attacks or sending spam messages.

A bot can be controlled by a single server, or by accepting messages from other bots, therefore making it difficult to control this network traffic.

Systems like IDS and IPS can help detecting bot traffic and prevent further communication.

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