CISA’s August Advisory: Why You Need Post-Compromise Detection by Lucie Cardiet

This advisory summarizes an expanded, state-sponsored Chinese APT campaign that has progressed from targeting telecommunications to compromising a wide range of critical infrastructure globally; it emphasizes attackers' focus on persistence and stealth (ACL modifications, credential harvesting via TACACS+/RADIUS, GRE/IPsec tunnels, Cisco Guest Shell abuse), maps techniques to MITRE ATT&CK, and argues that prevention alone is insufficient—calling for continuous post-compromise visibility, behavioral detection, correlation across telemetry, and faster response.