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.

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

Do you still need third-party antivirus on your Windows PC?

Windows 11 Pro keeps your PC safe through a sophisticated suite of tools. Here's how to respond to common alerts. When you purchase through links on our site, we may earn an affiliate commission. Here ...

Microsoft might see the Mac as a threat to its Windows platform, but that won’t stop it from protecting macOS users. The company’s Defender anti-virus software, previously a Windows exclusive, has ...

Malware can cripple a computer, steal personal data, and compromise security, yet protection doesn't always require paid software. By combining built-in tools, safe browsing habits, and free antivirus ...

Best Antivirus Best Antivirus Software for Windows PCs in 2026 Discover the highest ranked antivirus programs for Windows 10 and 11. See whether you need to save or splurge to protect your device, ...

Best Antivirus Best Free Antivirus for Windows 10 in 2026: Top Free Protection Options Compare the best free antivirus tools for Windows 10 in 2026, including real-time malware protection, phishing ...

The feud between "NightmareEclipse" and Microsoft continues to hold unpleasant surprises for the Windows ecosystem. The ...

A patch Microsoft released on Wednesday to fix a zero-day vulnerability in its Defender security engine may cause Windows ...