
Microsoft
Information
Microsoft was founded in 1975, with headquarters in Redmond, Washington.
Microsoft Security Essentials was introduced in 2009 as standalone malware protection for Windows XP, Vista and 7. It is integrated into Windows 8, 8.1 and 10 as Windows Defender and rebranded as Microsoft Defender Antivirus in 2020.
Microsoft joined AV-Comparatives’ Main Test Series in 2007.
Screenshots

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False Alarm Test March 2025
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Malware Protection Test March 2025
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Real-World Protection Test Feb-Mar 2025 - Factsheet
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Performance Test September 2024
Latest Consumer Main-Tests on Microsoft Windows
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Business Security Test 2024 (August - November)approved
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Performance Test November 2024
Part of Business Security Test 2024 (August – November) -
Real-World Protection Test Enterprise August-November 2024 - Testresult
Part of Business Security Test 2024 (August – November) -
Malware Protection Test Enterprise September 2024 – Testresult
Part of Business Security Test August-September 2024 – Factsheet
Latest Enterprise Main-Tests on Microsoft Windows
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Microsoft's progress

Reports containing Microsoft

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