The Windows Defender antivirus program, also known as Windows Security, comes installed with Windows 11/10. It is an antimalware scanning tool that lets you boot and scan from a trusted environment.

When you launch Windows Security on Windows 11, you may see a message You’re using other antivirus providers. This prevents you from activating the Real-time protection of Windows Defender against ...

PCWorld examines whether Windows 11’s built-in Microsoft Defender security suite provides adequate protection for everyday users without third-party antivirus software. Windows 11 includes ...

Microsoft releases new Windows Defender update packages very frequently to protect against various newly discovered malware. Once a while every three months or so, the company also pushes out these ...

Pranay Parab is an independent tech journalist based in Mumbai, India. He covers tech for Lifehacker, and specializes in tutorials and in-depth features. Last week, we learned that the FBI accessed a ...

Last week, we learned that the FBI accessed a defendant's deleted Signal messages on their iPhone, even though that user had deleted the app entirely from their device. It wasn't that the FBI was able ...

PCWorld explains how Windows 11’s increased advertising through notifications, widgets, and File Explorer can be eliminated using nine specific settings adjustments. These intrusive ads appear in ...

"You'll need a new app to open this windowsdefender link" appears when Windows cannot open the Windows Security app using the ...

Microsoft has fixed 167 vulnerabilities in its April 2026 Patch Tuesday update, including an actively exploited SharePoint ...

Windows notifications are helpful, but they can also be distracting. If you’re on Windows 10 or Windows 11, you may want to turn them off to stay focused or keep your screen clear. Notifications ...

The Red Sun vulnerability repository. Contribute to Nightmare-Eclipse/RedSun development by creating an account on GitHub.