I'm not sure, but the data that isn't gone is much harder to retrieve. The more rewrites that are made, the more advanced the retrieval techniques must be.

I'm pretty sure there is no software solution to find the data, it must actually be read with a much stronger reading method.

On 11/2/05, Angelo Bertolli <[EMAIL PROTECTED]> wrote:
Rob wrote:

>On Wed, Nov 02, 2005 at 12:28:34PM -0500, David Zakar wrote:
>
>
>>Yes. There was a discussion on bugtraq (or focus-linux?) a while back, I
>>believe. Essentially, the best way to delete your data is to never store
>>it unencrypted, and make sure to use a good crypto algorithm. You could
>>always piece together a shattered hard drive and then read that, whereas
>>brute forcing the encrypted data is mathematically just not going to
>>happen.
>>
>>Of course, they could still conceivably read your RAM, so you'll need to
>>physically destroy/hide that, too. And your crypto key! Breaking into
>>your house and stealing that hidden USB key is a serious issue...
>>
>>
>
>I've always taken it as a question of your faith in voodoo:
>
>Does the NSA have stronger voodoo in making lost bits coming back to
>life or by breaking strong encryption?  Lots of smart people can talk,
>but no one really nows..
>
>
You know, if it's really that hard to get rid of old data, someone ought
to leverage this to obtain more space from hard drives.  I mean after
all, if data which is deleted and rewritten over isn't really gone, then
why not use it?

Angelo



--
Andrei Krotkov
Blog and Site: http://www.krotkov.com

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