Microsoft Defender offers great protection from malware -- but there are other online threats you might want to consider, too.

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

To use Windows Defender ATP (Advanced Threat Protection), onboard your devices to the platform using Configuration Manager, Microsoft Intune, or manual installation. Access the Microsoft Defender ...

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

Enhanced phishing protection in Microsoft Defender is a security feature designed to guard against phishing attacks that attempt to steal users’ personal or login information. It works by actively ...

Microsoft to remove VPN from M365 users. Update, Feb. 4, 2025: This story, originally published Feb. 3, now includes a statement from Microsoft about the removal of ...

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 ...

Microsoft patches the Defender vulnerability known as RoguePlanet, roughly one month after a researcher published a zero-day ...

Enhancing security and compliance for small to medium-size businesses has become easier as they face a growing range of ...

Compare the best free antivirus tools for Windows 10 in 2026, including real-time malware protection, phishing defense, ransomware protection, VPN limits, ...