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I have made a mistake and deleted a sensitive file by placing it on the bin, and then empty the bin in OSX 10.12 (Sierra). I have heard this is not a secure way to delete sensitive files.

Is there a way to correct the mistake and clean any leftovers of the file securely, in a way that would prevent data recovery if the computer was compromised?

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The best way IMO would be to use a secure erase utility that will overwrite your free disk space with random data. I'm going to stop short of recommending a particular utility as I've never done it on OSX. However, make sure the utility you choose also cleans slack space as some of the sensitive information could exist there if new files were created after your insecure delete.

Also, if you have a SSD drive make sure the utility can support that type of drive.

  • Downvoter care to comment? – Dave Rager Nov 27 '17 at 13:18

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