MUO on MSN

The Windows security feature most people ignore is the one I check first on every PC

And it's almost always disabled.
Neowin

Support for Windows 10 has ended, but Microsoft Defender will continue to protect your PC

Microsoft has finally ended support for Windows 10, and while customers can opt for the ESU program, those who don't will be protected through Microsoft Defender too... kind of. Windows 10 has finally ...
Bleeping Computer

Microsoft warns of new Defender zero-days exploited in attacks

Update May 25, 04:19 EDT: CVE-2026-41091 is a Microsoft Defender local privilege escalation (LPE) flaw known as RedSun, and CVE-2026-45498 is known as UnDefend, a security flaw that can be exploited ...