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AVG
AVG/Avast could be lying....
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<blockquote data-quote="Trident" data-source="post: 1034957" data-attributes="member: 99014"><p>With SHA256 I don’t think it’s possible, more likely a file will get cached and after a signature is added (if the cache is not purged on definitions update) it may not be scanned for some time or until a system restart.</p><p></p><p>They don’t reveal too much information on how the cache is managed (for obvious reasons) but I would assume they cache files that are trusted and don’t cache unknown files so they could be rescanned again and again with streaming updates.</p><p></p><p>Even on files that are added to persistent cache, these will have digital signature. Avast can revoke the digital signature at any time using their Win32/BadSig detection and this will remove the file.</p></blockquote><p></p>
[QUOTE="Trident, post: 1034957, member: 99014"] With SHA256 I don’t think it’s possible, more likely a file will get cached and after a signature is added (if the cache is not purged on definitions update) it may not be scanned for some time or until a system restart. They don’t reveal too much information on how the cache is managed (for obvious reasons) but I would assume they cache files that are trusted and don’t cache unknown files so they could be rescanned again and again with streaming updates. Even on files that are added to persistent cache, these will have digital signature. Avast can revoke the digital signature at any time using their Win32/BadSig detection and this will remove the file. [/QUOTE]
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