Cybersecurity researchers have shed light on a cross-tenant blind spot that allows attackers to bypass Microsoft Defender for Office 365 protections via the guest access feature in Teams. "When users ...

Microsoft has released the KB5072753 out-of-band cumulative update to fix a known issue causing the November 2025 KB5068966 hotpatch update to reinstall on Windows 11 systems repeatedly. As the ...

The Microsoft Authenticator app is a vital tool for securing your accounts with two-factor authentication (2FA). When it stops delivering approval notifications or one-time codes, it can lock you out ...

Microsoft says that Teams users will be able to report false-positive threat alerts triggered by messages incorrectly flagged as malicious. This new feature was first announced in September, when it ...