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From: Karol Babioch <karol@babioch.de>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] (OT) Secure data wipe
Date: Sun, 09 Dec 2012 15:48:01 +0100	[thread overview]
Message-ID: <50C4A4A1.4090003@babioch.de> (raw)
In-Reply-To: <50C48372.5030106@gmail.com>

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Hi,

Am 09.12.2012 13:26, schrieb Javier Juan Martínez Cabezón:
> overwritting unallocated space several times

this basically is a myth. Overwriting the whole drive just one time will
make any recovery practically impossible, see [1].

The "multiple times" aspect to my best knowledge originates from the
good old days, where the density of tracks on floppies wasn't as high as
it is with todays hard drives and it was possible to "miss" the track by
some amount.

Best regards,
Karol Babioch

[1]
http://www.h-online.com/security/news/item/Secure-deletion-a-single-overwrite-will-do-it-739699.html


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  reply	other threads:[~2012-12-09 14:48 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-12-09 11:20 [dm-crypt] (OT) Secure data wipe jugree
2012-12-09 12:26 ` Javier Juan Martínez Cabezón
2012-12-09 14:48   ` Karol Babioch [this message]
2012-12-09 15:49     ` Javier Juan Martínez Cabezón
2012-12-09 16:38     ` Arno Wagner
2012-12-09 14:55 ` Karol Babioch
2012-12-09 16:18 ` Arno Wagner
2012-12-11  8:39 ` Roscoe

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