Microsoft unveils MAI-Cyber-1-Flash, promises cybersecurity AI at half the cost

Help Net Security coverage focuses primarily on cybersecurity AI products, governance, autonomous-agent controls, SIEM and threat-detection capabilities, plus Google’s revised threat-actor naming system. The most significant security event is the public proof-of-concept release for CVE-2026-54121 (“Certighost”), a critical Active Directory Certificate Services privilege-elevation flaw that may enable domain takeover. Organizations using AD CS should prioritize vulnerability assessment, vendor guidance, and remediation.