Re: MongoDB - wiping sensitive data (documents) securely/permanently so that it cannot be recovered

[David Hows]

Hi Ashwin,

This is a very loaded question and the answer is much about how far you want to go to ensure the data is truly deleted.

To start with you would need to consider the following things, as they may contain copies of your data:

- Pre-allocated on disk storage

- Shared memory spaces like the OpLog and Journal

- Logfiles 

- The filesystem itself

You would need to find a way to manage all of the above to gain some certainty that your data has been deleted

Cheers,

David

[Max Schireson]

Often I've seen folks use on-disk encryption as an alternative security approach.  Could that work for you Ashwin?

-- Max

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[Sam Millman]

This has also been posted on SO: http://stackoverflow.com/questions/12745486/mongodb-wiping-sensitive-data-documents-securely-permanently-so-that-it-cann/12747874