Detecting Command-and-control Traffic At The Network Layer
Security Boulevard, Saturday, September 12th, 2026
A primer on how C2 channels work and what they look like from the network rather than the endpoint.
This primer explains how command-and-control communication lets attackers operate compromised systems and manage malware, then covers what those channels look like from the network layer.
The detection value of network-level analysis is that it survives endpoint agent tampering, which modern malware routinely attempts.
The article covers beaconing patterns, protocol abuse and the indicators that remain visible even when traffic is encrypted. It is a solid technical foundation for teams building network detection capability rather than relying entirely on endpoint telemetry.