Microsoft: Most Windows 11 Users Don’t Need Third-Party Antivirus

Microsoft asserts that Windows 11's built-in security stack — including Microsoft Defender Antivirus, SmartScreen, Smart App Control, and ransomware protections — provides robust, continuously updated protection suitable for most users; it notes that power users and enterprise deployments may still prefer third-party or specialized enterprise security solutions and recommends keeping the built-in features enabled and updated.