[Dshield] Secure Data Removal
sparks at IDEAL.COM
Fri Jun 4 16:29:22 GMT 2004
for more than you ever wanted to konw about wiping harddrives
From: Maarten [mailto:dshield.org at plekje.net]
Sent: Friday, June 04, 2004 10:34 AM
To: General DShield Discussion List
Subject: Re: [Dshield] Secure Data Removal
Because of residual traces of magnetism. These can be used to recreate the
old data. The same happesn when you tape a piece of music and overwite it
with a new piece of music. Very softly the old music may be heard (unless
you tape heavy metal the second time ;-).
The NSA has come up with a method to whipe magnetic media clean and consist
of overwriting the content with 7 different sets of 'data' before the tape
is considered to be erased (safely).
Met vriendelijke groet,
From: Christophe Rome <asrgchr at yahoo.com>
To: list at lists.dshield.org
Date: Fri, 4 Jun 2004 04:23:01 -0700 (PDT)
Subject: [Dshield] Secure Data Removal
> A while ago there was a small topic about secure data
> removal on this list. I remember that overwriting an
> entire hard drive with O's would erase it completely
> in a FAST way but NOT a SECURE way. I was wondering
> now how one could be able to retrieve data from a hard
> drive that has been completely overwritten with 0's?
> Or is my assumption wrong?
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