Microsoft released out-of-band patches for an actively exploited Microsoft Office zero-day, CVE-2026-21509, a security ...

Microsoft's latest zero-day patch blocks a viral Office document hack - how to protect your PC ASAP ...

Microsoft has released emergency security updates to patch a high-severity Office zero-day vulnerability exploited in attacks ...

Microsoft confirmed it can hand over BitLocker recovery keys stored in the cloud under warrant, reviving debate over who controls encrypted data.