What happened
In its Sept 24, 2026 monthly roundup Microsoft detailed in-window updates to discover and control local AI agents (Local Agent discovery in Microsoft Defender, adding email-detonation AI summaries for Security Copilot), extend Zero Trust to agent traffic via new Entra/agent-aware controls, and strengthen SOC foundations — an ongoing series of agent-security capabilities across the Microsoft platform.
Why it matters
These incremental steps extend agent visibility, Zero Trust policy and AI-assisted SOC triage across the Microsoft Security platform, reinforcing that agent governance is becoming standard platform capability rather than niche tooling — relevant to any shop on M365 E5/Defender.
Applicability
Microsoft Security customers should review month's updates for local-agent discovery and agent-traffic Zero Trust controls; adopt the Defender + Copilot detonation summaries to speed SOC triage.