Microsoft Defender is a multidevice security app 1 that helps individuals and families protect their personal data and devices. Stay safer online with malware protection, 5 timely security alerts, 4 identity theft monitoring, 2 and credit monitoring 4.

Windows Security, formerly known as Windows Defender Security Center, is an app built into Windows 10 or 11 that helps keep your PC more secure. It includes Microsoft Defender Antivirus, an antivirus tool that helps protect you against viruses, ransomware, and other malware.

If you're looking for information about the Microsoft Defender Antivirus that is built into Windows, see Stay protected with Windows Security. Protect your Android, iPhone, Mac, and Windows devices from threats by installing Microsoft Defender.

Microsoft Defender XDR (formerly Microsoft 365 Defender) Get unrivaled threat intelligence and automated attack disruption of the most sophisticated attacks with a unified extended detection and response (XDR) solution.

May 2, 2024 · Microsoft Defender Antivirus is available in Windows 10 and Windows 11, and in versions of Windows Server. Microsoft Defender Antivirus is a major component of your next-generation protection in Microsoft Defender for Endpoint.

Jan 7, 2025 · Beginning with Windows 10, version 1703 and later, Microsoft Defender Antivirus settings are viewable in the Windows Security app. See Windows Security for more information about security features and settings that are built into Windows.

Explore the Microsoft Defender products and services available for your business or organization.

Microsoft Defender for Endpoint is a cloud-native endpoint security platform that provides visibility, cyberthreat protection, and EDR capabilities to stop cyberattacks across Windows, macOS, Linux, Android, iOS, and IoT devices.

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.

If you suspect that your device may have malware you should have Microsoft Defender run a scan. Here's how to do that on Windows, Mac, or Android.