Learn how to protect your Windows devices and personal data from viruses, malware, or malicious attacks.

Get tips to help protect your home computer from scams, malware, viruses, and other online threats that might try steal your personal information.

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.

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.

Learn how to use virus and threat protection options in Windows Security to scan your device for threats and view the results.

Bing disables links to potentially dangerous sites in our search results, and notifies you that the site may download malicious software that can harm your computer.

Close any non-essential apps during the scan. Open apps take resources, even ones you're not actively using, and may cause your machine to perform more slowly or unreliably. If you are still having …

Restart your computer periodically; at least once a week. This can help ensure the applications and operating system are up-to-date and helps your system run better.

Viruses, ransomware, spyware, and more are all types of malware. Microsoft Defender has powerful built-in features that can help protect your device against malware.

Crooks use phishing attacks, malware like ransomware, and tech support scams to try and steal your information and your money. Learn how to stop them!