Educause Security Discussion mailing list archives
Re: Degausser recommendations
From: Jeff Kell <jeff-kell () UTC EDU>
Date: Wed, 2 May 2007 21:37:37 -0400
Kevin Shalla wrote:
You may want to look at http://cmrr.ucsd.edu/Hughes/DataSanitizationTutorial.pdf In short, it says that most ATA drives since 2001 have a built-in utility that does a much better and much faster job of wiping disks clean than typical block erase (like the DOD 5220). It also says that because of changes in disk drive technology, degaussers are becoming less and less valuable for wiping disks.
To quote from my Forensic class notes:
NIST SP800-88 - "Studies have shown that most of today's media can be effectively cleared by one overwrite." "Purging information is a media sanitization process that protects the confidentiality of information against a laboratory attack. For some media, clearing media would not suffice for purging. However, for ATA disk dries manufactured after 2001 (over 15GB) the terms clearing and purging have converged." http://csrc.nist.gov/publications/nistpubs/800-88/NISTSP800-88_rev1.pdf
Jeff
Current thread:
- Degausser recommendations Ben Woelk (May 01)
- <Possible follow-ups>
- Re: Degausser recommendations InfoSec (May 01)
- Re: Degausser recommendations Brian Epstein (May 02)
- Re: Degausser recommendations InfoSec (May 02)
- Re: Degausser recommendations Chris Steele (May 02)
- Re: Degausser recommendations Kevin Shalla (May 02)
- Re: Degausser recommendations Jeff Kell (May 02)
- Re: Degausser recommendations Ben Woelk (May 03)
- Re: Degausser recommendations Chris Edwards (May 03)
- Re: Degausser recommendations Ken Connelly (May 03)
- Re: Degausser recommendations InfoSec (May 03)
- Re: Degausser recommendations Chris Edwards (May 03)
- Re: Degausser recommendations Ben Woelk (May 04)
- Re: Degausser recommendations Alan Amesbury (May 04)