OT: making files unrecoverable (was: Summer of Code Proposal - Looking for a mentor)

[Matthew Woehlke]

Hans Meine wrote:
> This is getting off-topic, but I want to point out that a recent study (*) 
> showed that the rationale behind this "shredding", i.e. the danger of being 
> able to retrieve overwritten data using an atomic force microscope is not true 
> (anymore) with modern (used) disks.  IOW, it has become sort of an "urban 
> legend".

Shredding umpteen times (or even "shredding") may not be needed, but 
overwriting the data at least once is still needed. Else you don't even 
need fancy equipment to recover the data, just 'dd' :-).

> * http://sansforensics.wordpress.com/2009/01/15/overwriting-hard-drive-data/

-- 
Matthew
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