The March 30, 2026 threat landscape is dominated by three converging attack patterns: exploitation of internet-facing management infrastructure (Fortinet FortiClientEMS, Citrix NetScaler), fileless malware campaigns targeting endpoint credential stores, and supply chain compromise weaponizing trusted DevSecOps tooling. Two critical CVEs with confirmed active exploitation (CVE-2026-21643 and CVE-2026-3055) demand emergency patching within 24 hours, as both enable unauthenticated remote code execution or session hijacking on broadly deployed enterprise platforms. Organizations should simultaneously address the DeepLoad campaign’s WMI-based reinfection mechanism and the TeamPCP supply chain threat, both of which are designed to survive standard incident response procedures.