In most of the security writings I have been studying, the consensus has
been to format and write junk to the disk at least four times. This past
summer I was working with a client, that was a bank, and I was told that
this standard was  acceptable OCC - the Federal regulators for the banking
industry. Most of the electronic shredders we look at did at least four to
six times.

David

-----Original Message-----
From: plug-discuss-bounces@lists.plug.phoenix.az.us
[mailto:plug-discuss-bounces@lists.plug.phoenix.az.us]On Behalf Of
Technomage
Sent: Saturday, October 08, 2005 10:08 PM
To: plug-discuss@lists.plug.phoenix.az.us
Subject: computer forensics question


ok,
I've been wrangling this question around a while and haven't been able to
gain
any real answers that make sense (and my knowledge base on this is lacking
due to being 10 years out of date).

so, here goes:

is it possible, given the current understanding of the laws of physics, to
so
erase a hard drive as to make it virtually impossible to recover ANY data of
any usefulness whatsoever (up to and including either a major government or
major multinational corporationthrowing huge sums of money at the problem in
an attempt to recover)?

so far, the only answer I have found is: a conditional no (any or all the
data
can be recovered, including the previously written data multiple layers
deep).

is there a correct 9and unconditional) answer for this arguement?
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