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Video Reviews - Security and Privacy
Microsoft Defender Antivirus Tested 7.3.21
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<blockquote data-quote="Andy Ful" data-source="post: 950252" data-attributes="member: 32260"><p>It seems that the author wrongly recognized the number of detected threats in signature (offline) tests.</p><p>In the File Detection test - New malware samples (300) the result was 75 threats found, but most of the detected samples were not removed by Defender from the folder with malware samples (removal can last several minutes).</p><p></p><p>[ATTACH=full]259567[/ATTACH]</p><p></p><p>The correct number of detected samples could be counted by inspecting Windows Event Log.</p><p></p><p>Normally such a test would be worthless because of the small number of samples and several methodology flaws. But in this case, the signature detection of Defender differs significantly from other products, so it can show something real. Detecting even all 75 threats (from 300) is still a poor signature detection result. This is a well known fact for Defender local signatures. One can compare it with the professional tests made by AV-Comparatives that show the same.</p><p></p><p>On the contrary to signature tests, other tests in this video showed very good results. But, this means nothing, because of the small number of samples and flawed methodology. Testing other AVs in this way cannot show statistically meaningful differences between popular AVs.</p></blockquote><p></p>
[QUOTE="Andy Ful, post: 950252, member: 32260"] It seems that the author wrongly recognized the number of detected threats in signature (offline) tests. In the File Detection test - New malware samples (300) the result was 75 threats found, but most of the detected samples were not removed by Defender from the folder with malware samples (removal can last several minutes). [ATTACH type="full" alt="1625758994776.png"]259567[/ATTACH] The correct number of detected samples could be counted by inspecting Windows Event Log. Normally such a test would be worthless because of the small number of samples and several methodology flaws. But in this case, the signature detection of Defender differs significantly from other products, so it can show something real. Detecting even all 75 threats (from 300) is still a poor signature detection result. This is a well known fact for Defender local signatures. One can compare it with the professional tests made by AV-Comparatives that show the same. On the contrary to signature tests, other tests in this video showed very good results. But, this means nothing, because of the small number of samples and flawed methodology. Testing other AVs in this way cannot show statistically meaningful differences between popular AVs. [/QUOTE]
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