ShieldBreak is a claimed patch bypass for Defender flaw CVE-2026-50656, with a PoC tested on Windows 11 25H2 and Server 2025.

Security researchers reproduced ShieldBreak, a claimed Windows Defender zero-day that manipulates cloud hydration and ...

Scan and clean your PC with the Windows Malicious Software Removal Tool. Learn how to run it, check results, and remove active malware fast.

Learn how BitLocker, passkeys, Microsoft Defender, and other Windows 11 security features protect your data, accounts, apps, and devices.

For most people using a supported and fully updated Windows 11 computer, yes: Microsoft Defender Antivirus and the other protections inside Windows Security are sufficient as the primary antivirus.

Both AVG and Windows Defender work to protect your PC from malware and other security threats. They both have major differences in the following aspects. AVG and Windows Defender mainly differ in ...