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Command and Control (C2) describes the communication channels attackers use to remotely manage compromised systems within a target network. These channels allow adversaries to send instructions to malware, enabling actions like data theft, lateral movement, or launching attacks such as Distributed Denial of Service (DDoS). C2 infrastructure often involves covert protocols or encrypted traffic to evade detection.

Effective defense requires monitoring network traffic for unusual patterns or connections to known malicious domains and blocking or isolating suspected C2 communications. Disrupting these channels can prevent attackers from controlling infected devices, limiting the scope and impact of an intrusion. Understanding C2 techniques is essential for prioritizing network segmentation, threat intelligence integration, and timely response to contain active compromises.

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Bank Info Security 1 month, 2 weeks ago

Glassworm Group: Software Supply-Chain Attackers Disrupted

Suspected Russian Crime Group Built Resilient Command-and-Control InfrastructureIn a joint operation, CrowdStrike, Google and Shadowserver Foundation disrupted infrastructure used by the Glassworm cybercrime group, cutting off attackers from victims. The group has wielded a remote access Trojan to repeatedly target developers of widely used open-source software.

More from Bank Info Security 28 May 2026, 6:30 a.m. Incident · 7 stories Command and Control Crowdstrike Cybercrime Google Open Source Remote Access Trojan Russia Supply Chain Trojan Victims

CrowdStrike, in partnership with Google and the Shadowserver Foundation, has announced the simultaneous disruption of all command-and-control (C2) channels associated with GlassWorm, a persistent software chain campaign targeting software developers through malicious packages and extensions

More from The Hacker News 27 May 2026, 11:48 p.m. Incident · 7 stories Command and Control Crowdstrike Google Malware Outage Partnership Supply Chain

Glassworm infected developers through poisoned tools and packages until a coordinated takedown killed all four of its C2 channels at once. On May 26, 2026, at 14:00 UTC, CrowdStrike Counter Adversary Operations team, working with Google and the Shadowserver Foundation, killed all four command-and-control channels of the Glassworm botnet at the same time. The timing […]

More from Security Affairs 27 May 2026, 11:35 p.m. Incident · 7 stories Botnet Command and Control Crowdstrike Google Infection