What is Windows Defender?

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What is Windows Defender?

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Windows Defender is a Windows Vista tool that keeps spyware and other potentially unwanted software from infecting a computer. It uses definitions to determine if detected software is spyware or malware, and then to alert users of potential risks. Definitions are updated periodically through Windows Update or by setting Windows Defender to check online for updated definitions. Windows Defender provides three ways to protect a computer:

  • Real-time protection: When spyware or potentially unwanted software tries to install itself or run on a computer, Windows Defender invokes alert messages for a user working on the computer. It also invokes alert messages when programs attempt to change important Windows settings.

  • SpyNet community: Microsoft has created an online Microsoft SpyNet community that helps users respond to software that has not yet been classified for risks. Windows Defender uses this community opinion to help users take their decisions.

  • Scanning options: Windows Defender is used to scan for spyware and other potentially unwanted software that might be installed on a computer.
Note: While using Windows Defender, it is important to have up-to-date definitions.


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