In 2019, it was revealed that Windows Defender had a market share of more than 50% already on Windows. According to the results of the test, Microsoft Defender had one of the worst offline detection rate results; it managed to detect 60.3% of all threats on offline devices. Only Panda Free Antivirus, with a detection rate of 40.6% , and Trend Micro Internet Security, with a detection rate of 36.1% , scored worse in the offline detection test. The result of the offline detection test highlights how important cloud connectivity and testing is for Microsoft's security product. ADVERTISEMENTSummary Article Name Microsoft Defender's protective capabilities suffer offline Description Microsoft Defender had a weak offline detection rate in the latest AV Comparatives Windows antivirus test.

Source: Wall Street Journal April 23, 2022 10:27 UTC