Windows Security: Defender Antivirus, SmartScreen, and More | Microsoft …
Protect your privacy, identity, and devices with Windows Security. Explore Windows 11 security features like Microsoft Defender Antivirus that help keep you and your PC safe.
Why Microsoft Security?
Discover why Microsoft Security is the top choice for comprehensive security. From a Zero Trust strategy to unified SecOps, safeguard your data in the AI era.
Microsoft Defender—Cybersecurity Solutions | Microsoft Security
Explore Microsoft Defender, powerful cybersecurity software and solutions for individuals and businesses, backed by advanced Microsoft threat protection.
How to join Windows 10 ESU for extended security updates
Sep 15, 2025 · Windows 10 Extended Security Updates (ESU) lets PCs get security patches until October 13, 2026, since main support ends October 14. Here's how to enroll.
Windows 11 Security Features | Microsoft Windows
Dec 31, 2024 · Experience the enhanced security and peace of mind that comes with Windows 11. With features like Smart App Control and Microsoft Defender antivirus, you can trust your …
Windows 10 just hit end of life — here's how to get a year of security …
6 days ago · Your Windows 10 PC has officially reached "end of life," but there's a simple way to keep it secure without upgrading
Windows 11 security book - Operating System security | Microsoft …
Nov 18, 2024 · Windows 11 is the most secure Windows yet, with strong operating system safeguards to help keep devices, identities, and data safe. Defenses include a trusted boot …
What Microsoft’s 2025 report reveals about the new rules of …
Oct 24, 2025 · AI is reshaping cyber attacks as criminals and state actors exploit identity gaps, ransomware, and cloud systems, says Microsoft's report.
Stay Protected With the Windows Security App - Microsoft Support
The Windows Security app is a comprehensive security solution integrated into Windows, designed to protect your device and data from various threats.
Microsoft security help and learning
Get security info and tips about threat prevention, detection, and troubleshooting. Including tech support scams, phishing, and malware.