full-disclosure - Re: Disk wiping -- An alternate approach?

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Date: Tue, 26 Jan 2010 13:31:02 -0500
From: Michael Holstein <michael.holstein@...ohio.edu>
To: Stefan Weimar <sw@...is.toppoint.de>
Cc: full-disclosure <full-disclosure@...ts.grok.org.uk>
Subject: Re: Disk wiping -- An alternate approach?

> Yes, but what if I overwrite the device with random data from the very
> first to the very last byte? Suppose the size of the device hasn't
> decreased I'd think that wear-levelling has no chance to spare blocks in
> this case.
>
>   

Research paper on forensics for flash media :

http://www.ssddfj.org/papers/SSDDFJ_V1_1_Breeuwsma_et_al.pdf

In any case, provided you take a factory-new drive and immediately
install an encrypted filesystem on it, any such "orphan" data would be
essentially random.

Regards,

Michael Holstein
Cleveland State University

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