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A comment on Ask HN: How to handle user file uploads?. Parent comment

Re:Ask HN: How to handle user file uploads? by eyegor on Saturday May 04, 2024 @06:44AM (#40256555)
I'm not sure if it's still true, but it used to be that ~half of all antivirus would flag an executable if you compressed it with UPX.
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Re:Ask HN: How to handle user file uploads? by cinntaile on Saturday May 04, 2024 @07:34AM (#40256849)
You could sometimes bypass this by opening the file with a hexeditor and change a meaningless value. When UPX was popular there were also alternative file compressors that could also be used to sometimes bypass this issue.
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