Learn about the Windows Security app and some of the most common tools you can use.

Real-time protection is a feature in the Windows Security app that continuously monitors your device for potential threats such as viruses, malware, and spyware. This feature ensures that your device is actively protected by scanning files and programs as they are accessed or executed.

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.

In the Windows Security app on your PC, select Device security > Security details. For more information, see Windows 11 Secured-core PCs. Core isolation provides security features designed to protect core processes of Windows from malicious software by isolating them in memory.

Microsoft security help and learning. 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.

Get security info and tips about threat prevention, detection, and troubleshooting. Including tech support scams, phishing, and malware.

In previous versions of Windows 10, Windows Security is called Windows Defender Security Center. If you have Windows 10, you’ll get the latest antivirus protection with Windows Security.

In the Windows Security app on your PC, select App & browser control, or use the following shortcut: App & browser control. Smart App Control adds significant protection from new and emerging threats by blocking apps that are malicious or untrusted.

Learn more about the Windows Security app here.

Under Microsoft Defender Firewall, switch the setting to On to enable Windows Firewall. To turn it off, switch the setting to Off. Turning off Windows Firewall could make your device more vulnerable to unauthorized access.