How to Delete Files on Android So They Can't Ever Be Recovered

When you delete a file, Android doesn't actually remove it from your storage drive—instead, it simply marks that space as empty and pretends the file doesn't exist anymore. But deep down inside, the file that you originally wrote to that location is still physically there, at least until you randomly happen to save another file on top of that same spot. This is how apps like Undeleter are able to recover deleted files, and it's how government agencies are able to pull data off of wiped hard drives. It's an obvious security risk, so developer Giuseppe Romano stepped in with an app that will... more

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