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Microsoft Defender Antivirus (formerly Windows Defender) is an antivirus software component of Microsoft Windows.It was first released as a downloadable free anti-spyware program for Windows XP and was shipped with Windows Vista and Windows 7.
Defender (formerly Standalone System Sweeper): An antivirus that scans a system for malware, rootkits, and potentially unwanted software. Uses the same engine as Microsoft Security Essentials and other Microsoft antivirus products. [11] ERD Commander originally included more tools, including a web browser. [12]
Service Pack 2, released in August 2004, includes the first version of Windows Security Center (WSC). This version monitors Windows Update, Windows Firewall, and the availability of an anti-virus program. Third-party providers of personal firewall and anti-virus software packages were encouraged to use WSC API to register their products with WSC.
Company Software On-demand scan On-access scan Heuristics CloudAV Firewall IDS IPS Email security Antispam Web protection Live-update Support License Price First release
Microsoft Anti-Virus for Windows (MWAV), included as part of the package, was a front end that allowed MSAV to run properly on Windows 3.1x. In 2009, Microsoft launched an in-house antivirus solution named Microsoft Security Essentials , which later was phased out in favor of Microsoft Defender .
John Dunn of PCWorld, who analyzed the report, noted that the tendency to use free AV software was something new: "After all, free antivirus suites have been around for years but have tended to be seen as the poor relations to paid software." He named Microsoft Security Essentials as an influence on PC users to adopt free AV software. [71]
PCKeeper Antivirus (version 1.x) received 2 OPSWAT Gold Certifications in the Antispyware and Antivirus categories. [18] The German organization AV-Test.org tested 25 anti-virus programs. The testers found that AhnLab, Microsoft Windows Defender and PCKeeper Antivirus were the lowest performing anti-virus applications for Windows 8.1. [19]
Antivirus software (abbreviated to AV software), also known as anti-malware, is a computer program used to prevent, detect, and remove malware. Antivirus software was originally developed to detect and remove computer viruses , hence the name.