The Windows 11 September 2025 update introduces a new Recall homepage, a redesigned Windows Hello UI, a Settings AI agent, ...

That said, there are a few security features that, although they address specific flaws, may themselves pose security risks.

Windows Defender is a capable antivirus solution built into Windows itself. Unless you’ve installed a different antivirus program on your Windows 11 or Windows 10 PC, your PC is using it right now.