Executive Summary On December 5th, 2025 the US’s Cybersecurity and Infrastructure Security Agency (CISA), National Security Agency, and Canada’s Cyber Security Centre released a joint malware report on BRICKSTORM, a backdoor targeting VMware vSphere and Windows environments. The suspected threat actor(s), tracked as UNC5221 by Mandiant and WARP PANDA by CrowdStrike, are identified as [...]
