What's New in Microsoft Security: August 2026
Microsoft, Thursday, August 27th, 2026
Microsoft's August security update adds agent activity insights, broader environment coverage and management improvements.
Microsoft's monthly security roundup for August 2026 covers new capabilities across its security portfolio.
The headline theme is visibility into agent activity, giving organizations insight into what AI agents are doing in their environments, a gap that has widened as agent deployment outpaced monitoring.
The update also expands security coverage across additional supported environments and enhances security management tooling. The post collects these changes for security teams tracking what has shipped across Defender, Entra, Intune and the wider Microsoft security stack.