New Year, New Blumira Briefing: AiTM Attacks, AD/POSIX, and AI Agents

Blumira Briefings are back for 2026 with a svelte new runtime to get you the critical security developments you need to know about even faster.In this episode: - Microsoft 365 services being exploited in sophisticated Adversary-in-the-Middle phishing campaigns- Active Directory vulnerability involving the 'primaryGroupID' attribute that could enable privilege escalation- Emerging security challenges in AI agent runtime environmentsLike the new look? Wanna see us cover something in next week's episode? Let us know below!Sources:AiTM Phishing Campaign: https://www.microsoft.com/en-us/security/blog/2026/01/21/multistage-aitm-phishing-bec-campaign-abusing-sharepoint/Active Directory Vulnerability: https://trustedsec.com/blog/adventures-in-primary-group-behavior-reporting-and-exploitationAI Agent Security Risks: https://www.microsoft.com/en-us/security/blog/2026/01/23/runtime-risk-realtime-defense-securing-ai-agents/