How would a person go about hiding the true file type of a file? For example, let’s say I have a folder full of confidential information. I make an encrypted ZIP file, and change the file type to .null. However, if I run the file command, it still shows up as a ZIP file. Is there anyway to truly hide it?
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just make the file extension null
or you can also hide the file with attrib command in cmd
You could also try overwriting any file signatures(Magic bytes, sectors, etc.), save them and somehow recover them for the saved data.
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