Use an anti-malware app - Installing an anti-malware app and keeping it up to date can help defend your PC against viruses and other malware (malicious software). Microsoft Defender is free anti-malware software included with Windows if you have a Microsoft 365 Personal, Family, or Premium subscription.
Microsoft Defender SmartScreen helps you browse more safely in Microsoft Edge by: Alerting you to suspicious web pages: As you browse the web, SmartScreen analyzes web pages and determines if they might be suspicious. If it finds a suspicious site, SmartScreen displays a warning page advising you to continue with caution and giving you an opportunity to provide feedback to Microsoft. Defending ...
The Windows Security app is a comprehensive security solution integrated into Windows, designed to protect your device and data from various threats. It includes features such as Microsoft Defender Antivirus, Windows Firewall, and Smart App Control, which work together to provide real-time protection against viruses, malware, and other security threats. The app is built into Windows, ensuring ...
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.
How to start a scan for viruses or malware in Microsoft Defender
Learn about getting started with the new Microsoft Defender on your personal devices including Windows, Mac, Android, and iOS.
The Device security page in the Windows Security app helps protect your Windows device by managing hardware‑based and operating system security features, including Secure Boot, core isolation, and processor‑level protections. These features work together to defend against malware, firmware attacks, and system compromise. The page is divided into the following sections: Secured-core PC: If ...