Windows Security: Defender Antivirus, SmartScreen, and More
Protect your privacy, identity, and devices with Windows Security. Explore Windows 11 security features like Microsoft Defender Antivirus that help keep you and your PC safe.
Installing Microsoft Defender - Microsoft Support
Microsoft Defender is a new security app that helps protect you and your family across all your devices; Windows, Android, Mac, and iOS.
Stay protected on Windows 11 with smart security features
Microsoft Defender Antivirus will detect the threat, block the download, and notify you, helping prevent data theft or system damage. It's on by default, reducing the need for an alternative antivirus on …
Getting started with Microsoft Defender
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 …
I was told Microsoft defender was automatically built into windows 11 ...
Aug 18, 2024 · Yes, Windows 11 does indeed come with Microsoft Defender, formerly known as Windows Defender. Microsoft Defender is a built-in antivirus and security solution that provides …
Does Windows 11 Need Antivirus on Laptops? | Microsoft Surface
Jan 23, 2024 · Learn how Windows 11 can keep your laptop secure with built-in antivirus and security features like Microsoft Defender and your Microsoft Edge browser. Microsoft Security features built …
Microsoft Defender - Free download and install on Windows
Microsoft Defender is a security app for individuals and families that helps protect identities, data, and devices from online threats. The Microsoft Defender app is available exclusively with a Microsoft 365 …
Microsoft Defender Antivirus in Windows Overview
Oct 20, 2025 · Learn how to manage, configure, and use Microsoft Defender Antivirus, built-in antimalware and antivirus protection.
Stay Protected With the Windows Security App - Microsoft Support
One of the key benefits of the Windows Security app is its ability to provide real-time protection. Microsoft Defender Antivirus continuously scans your device for potential threats and takes …
Windows 11 security book - Virus and threat protection
Nov 18, 2025 · Microsoft Defender Antivirus is a next-generation protection solution included in all versions of Windows 11 and Windows 10 devices enrolled in Extended Security Updates (ESU) after …