Destroying confidential information from database

james hughes hughejp at
Thu Apr 30 19:53:34 EDT 2009

On Mar 9, 2009, at 10:32 PM, Mads wrote:

> I know of procedures and programs to erase files securely from  
> disks, Guttman did a paper on that....
> What I don't know is how to securely erase information from a  
> database.

If the material is that sensitive, and you only want to selectively  
delete the information, the only way is to:

1) delete the information from the database using the commercial means,
2) export the database
3) Inspect the exported data to ensure all the sensitive information  
is deleted
4) import the database to another storage system.
5) destroy (degauss, wipe) the original storage system.
6) the truly paranoid would destroy the raid controllers also (since  
it contains NVRAM)

Not trivial...


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