Command-and-control (C&C) server

As the name itself suggests, command-and-control (C&C) servers are used to remotely send often malicious commands to a botnet, or a compromised network of computers. The term originated from the military concept of a commanding officer directing control to his/her forces to accomplish a goal. C&C servers were popular for using internet relay chat (IRC) networks, legitimate websites, and dynamic DNS services. The backdoor malware, BKDR_MAKADOCS.JG, is noted for its evasion technique against anti-malware as it uses Google Docs for its C&C communication.

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