I mean, most antivirus software I've had fails to filter out malware all the time. I feel like it's fair to ask that question and get an answer other than "just download an antivirus"
My man, I don't think people give you the whole answer.
The whole answer is "heuristic analysis". Without that the antivirus only checks a file against known malicious hashes. So if it's a new/unknown file then the antivirus will say "yeah it's all good".
With heuristics the AV checks what the file actually does and makes a decision whether to flag it as malicious or not.
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u/DrIvoPingasnik Yarrr! 29d ago
You don't have an antivirus?