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That doesn't seem to be the case here, because the files are actually deleted once the user logs out of Snapchat. So it's obviously the Snapchat app itself that is triggering the file deletion, not the OS.



The person you're replying to is referring to making the files unrecoverable. The word most often used is "shred."

edit: The Snapchat app, like the vast majority of applications, asks the OS to delete files. It very probably doesn't have any direct access to I/O.


Seems like an API that the OS should expose. I'm sure other apps like banking/financial would benefit from this, too.




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