​​​​What’s new in Microsoft Security: November 2026

Summary

Microsoft's November 2026 security updates target AI agent security, least privilege, threat protection, and exposure management. Dynamic Permissions gives each agent task-scoped authority that adjusts as risk changes, and Microsoft Execution Containers (MXC), now generally available on Windows, applies OS-enforced least-privilege controls to local agents. Intune Endpoint Privilege Management also lets standard users change network adapter settings under administrator-defined elevation rules.

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