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Optiv Cybersecurity Dictionary
Command and control (C2) is often used by attackers to retain communications with compromised systems within a target network.
They then issue commands and controls to compromised systems (as simple as a timed beacon, or as involved as remote control or data mining). It's usually the compromised system/host that initiates communication from inside a network to a command and control server on the public internet. Establishing a command and control link is often the primary objective of malware.
April 02, 2018
Attackers and security assessors alike are utilizing a technique called domain fronting, which masks malicious command and control (C2) traffic. This....
January 25, 2017
A command kill chain consists of payload delivery, code execution on a target system, and establishing a command and control (C2) channel outside of a....