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Re: Default number of overwrites in shred
From: |
Peter Eckersley |
Subject: |
Re: Default number of overwrites in shred |
Date: |
Thu, 03 May 2007 20:17:39 -0700 |
On Thu, 2007-05-03 at 19:05 -0700, Paul Eggert wrote:
> Peter Eckersley <address@hidden> writes:
>
> > I was wondering if you would consider reducing the number of default
> > overwrites for "shred" from 25 to something more like 5?
>
> As near as I can make out, for modern disks the default should be 1.
> That's easy to change. Any objections?
>
We might choose 2, because of the 1% chance of recovery cited by one of
the recovery firms in that paper.
Or 3, because we're paranoid.
> There's also the Secure Erase facility built into modern ATA drives,
> which it sounds like 'shred' should use if it's available.
> Does anybody know how well GNU/Linux supports it?
> See <http://cmrr.ucsd.edu/hughes/SecureErase.html>.
--
Peter Eckersley address@hidden
Staff Technologist Tel +1 415 436 9333 x131
Electronic Frontier Foundation Fax +1 415 436 9993
- Default number of overwrites in shred, Peter Eckersley, 2007/05/03
- Re: Default number of overwrites in shred, Paul Eggert, 2007/05/03
- Re: Default number of overwrites in shred,
Peter Eckersley <=
- Re: Default number of overwrites in shred, Jim Meyering, 2007/05/04
- Re: Default number of overwrites in shred, Peter Eckersley, 2007/05/04
- Re: Default number of overwrites in shred, Jim Meyering, 2007/05/04
- Re: Default number of overwrites in shred, Paul Eggert, 2007/05/04
- Re: Default number of overwrites in shred, Jim Meyering, 2007/05/04
- Re: Default number of overwrites in shred, Peter Eckersley, 2007/05/04
- Re: Default number of overwrites in shred, Philip Rowlands, 2007/05/05
- Re: Default number of overwrites in shred, Pádraig Brady, 2007/05/06
- Re: Default number of overwrites in shred, Paul Eggert, 2007/05/08