Microsoft Defender Antivirus is free and is included in Windows, always on and always working to protect your PC against malware.
More About Microsoft Defender :
Microsoft Defender is a Microsoft Windows anti-malware component. It was initially released as a free anti-spyware programme for Windows XP and was included with Windows Vista and Windows 7. It has evolved into a full-fledged antivirus programme, taking the place of Microsoft Security Essentials in Windows 8 and later versions.
Windows Defender only protected users against spyware prior to Windows 8. It contains a number of real-time security agents that monitor several common areas of Windows for changes that could be caused by spyware. It can also uninstall installed ActiveX software.
Windows Defender included built-in support for Microsoft SpyNet, which allows users to report spyware to Microsoft as well as what applications and device drivers they allow to be installed on their systems. Virus protection was later added to Windows 8, which is similar to Microsoft Security Essentials (MSE). It also employs MSE's anti-malware engine and virus definitions.
Windows Defender settings in Windows 10 are managed through the Windows Defender Security Center. The Windows 10 Anniversary Update includes a new logo and a pop-up notification that announces the results of a scan, even if no viruses are found.
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