If you have received an error message saying, "Microsoft Defender SmartScreen prevented an unrecognized app from starting," while launching or installing a recently ...

An actively exploited security bypass vulnerability in Microsoft Defender SmartScreen is being exploited in a new stealer campaign to download malicious executables on the victim’s system. Tracked as ...

Towards the end of March, Microsoft confirmed a Windows 11 issue where the Windows security app would incorrectly display "Local Security Authority protection is off", even when the feature was ...

Announcing Microsoft Defender Experts Suite, a integrated set of expert-led services that helps security teams keep pace with ...