Command and Control

Command and Control: Communication infrastructure used by attackers to control compromised systems. The term describes an attack methodAttack MethodA defined way in which an attacker attempts to compromise a target or achieve an objective., malicious componentMalicious ComponentCode, content, or infrastructure that performs or supports malicious activity., or threat scenario. Protection requires a combination of preventionPreventionMeasures intended to stop security incidents or attacks before they occur., detectionDetectionThe capability to identify suspicious activity, attacks, or policy violations in time., containmentContainmentActions that limit the scope, spread, and impact of an active security incident., recoveryRecoveryThe controlled restoration of systems, data, and business services after a disruption., and awareness-raising.

How it works and where it fits

Command and Control structures knowledge about potential adversaries, their objectives, capabilities, infrastructure, and observed behavior. Individual indicators are short-lived and easy to change, while behavioral patterns and technical relationships often have greater analytical value. Reporting should distinguish observed facts, assessments, and assumptions.

Practical security relevance

Practical use depends on source quality, timeliness, and relevance to the organization’s own attack surface. Information is prioritized, correlated with internal data, and converted into searches, detections, or safeguards. Investigation feedback continuously improves the assessment. Confidentiality and permitted sharing are as important as technical exchange formats.

Related concepts

• MalwareMalwareUmbrella term for software with malicious or unwanted functionality.: Umbrella term for software with malicious or unwanted functionality.
• BotnetBotnetNetwork of compromised devices controlled either centrally or decentrally.: Network of compromised devices controlled either centrally or decentrally.
• BeaconingBeaconingRegular communication between a compromised system and a command-and-control infrastructure.: Regular communication between a compromised system and a command-and-control infrastructure.
• Threat HuntingThreat HuntingSearches for previously undetected attacker activity based on hypotheses.: Searches for previously undetected attacker activity based on hypotheses.