[ale] [OT] Mojave Experiment

[Jeff Lightner]

Last time I looked at DoD (probably 6 years ago) they were saying to do
7 low level formats.   At the place where I had to do FDA Validation
they agreed with me that for a RAID array doing 3 passes and randomizing
the disks was probably sufficient since we weren't expect the Russians
to try and intercept the return and decrypt the drives..  :-)

 

________________________________

From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Jim
Kinney
Sent: Thursday, July 31, 2008 10:06 AM
To: ale at ale.org
Subject: Re: [ale] [OT] Mojave Experiment

 

try a belt sander on the platters. By the time that data stream is
reassembled, our sun will be a red giant.

Realistically, a 1T+ alternating magnetic field (60Hz) for 5 seconds
with the drive not stationary in the field will render it useless to
even the most sophisticated STM/AFM methods. This will also render the
heads useless as well.

A hand-held bulk tape erasure moving across the top cover of a drive for
about 30 seconds will render the contents unrecoverable to "normal"
people. Most 3-letter named organizations can pull data off from this.
This will not destroy the drives ability to be used again like the above
method.

Log splitter method just looks fun:
http://www.youtube.com/watch?v=pZJOFEepjXw

On Thu, Jul 31, 2008 at 9:45 AM, Greg Freemyer <greg.freemyer at gmail.com>
wrote:

2008/7/30 Forsaken <forsaken at targaryen.us>:

> On Wed, 30 Jul 2008 15:19:04 -0400
> "Michael B. Trausch" <mike at trausch.us> wrote:
>> Most people just do the reinstallation and think
>> that the data is gone... but it's not; usually it's only (poorly)
>> written over.
>
> Yeah, I used to have to DoD wipes at my former job. And for another
> employer, the solution to getting rid of hard drives that were no
> longer needed involved a drill press. Effective to prevent run of the
> mill data recovery, but still not impossible. It was fun though!
>
> The only real way to ensure data is gone off a drive is to drop it
into
> a crucible and turn it into molten slag.
>

NIST officially says that a single pass wipe does the job on a 20GB or
larger drive.

Only trouble is they have not shared the testing to backup their
statement.  I think the NSA did the tests.

Greg
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James P. Kinney III
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