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

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.

The virus and threat protection page of the Windows Security app is designed to help you safeguard your device against various threats such as viruses, malware, and ransomware.

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

Find out how Windows Security can help keep your PC safe from malicious software and viruses.

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.

Learn how malware can infect your PC from sources such as spam email, removable drives, potentially unwanted software, and suspicious websites.

Malware consists of viruses, spyware and other potentially unwanted software. Microsoft Defender Antivirus is free and is included in Windows, always on and always working to protect your PC …

This article contains lists of tools and resources that Microsoft makes available to help you understand how to avoid or remove malware and viruses from your Windows-based computer.