Security Basics mailing list archives
Re: Interesting One
From: ATD <simon () snosoft com>
Date: 30 Oct 2002 18:08:05 -0500
I have heard similar claims from "agencies" about the ability to recover data after multiple re-writes. I also happen to know that several of these "agencies" when doing drive disposal, literally drill holes in their drives then incinerate them. That is after they wipe the drive clean several times. I'd assume that there is a reason for such paranoia, wouldn't you? Or do you think they are just playing it super safe? On Tue, 2002-10-29 at 15:57, Carol Stone wrote:
I don't know much about this, but yesterday I read in one of the later chapters of Bruce Schneier's book, "Secrets and Lies," (link to amazon follows) that over-writing data on a disk does *not* completely obliterate it, it just makes it a lot more difficult to recover with each over-write. I believe he said just how many re-writes were still recoverable was a secret one of our governmental organizations wasn't about to give up. I'll look at my book later when I have it in my hands and see if I can't find part and post a pointer to *his* reference. -carol http://www.amazon.com/exec/obidos/tg/detail/- /0471253111/qid=1035924654/sr=8-3/ref=sr_8_3/104-4454644-5987143? v=glance&n=507846Greetings Folks, I had an interesting conversation today with someone from FAST (Federation Against Software Theft) They pretend not to be a snitch wing of theBSA.Anyway, to get to the point, the guy that came to see me said thattheirforensics guys could read data off a hard drive that had been written over up to thirty times. I find this very hard to believe and told him I thought he was mistaken but the guy was adamant that it could be done. My question is, does anyone have any views on this, or, can anyone point me to a source of information where I can get the facts on exactly how much data canberetrieved off a hard drive and under what conditions etc etc. Thanks Dave Adams This message (and any associated files) is intended only for the use of the individual or entity to which it is addressed and may contain information that is confidential, subject to copyright or constitutes a trade secret. If you are not the intended recipient you are hereby notified that any dissemination, copying or distribution of this message, or files associated with this message, is strictly prohibited. If you have received this message in error, please notify us immediately by replying to the message and deleting it from your computer. Messages sent to and from John Crowley (Maidstone) Ltd may be monitored. Internet communications cannot be guaranteed to be secure or error-freeas information could be intercepted, corrupted, lost, destroyed,arrivelate or incomplete, or contain viruses. Therefore, we do not accept responsibility for any errors or omissions that are present in this message, or any attachment, that have arisen as a result of e-mail transmission. If verification is required, please request a hard-copy version. Any views or opinions presented are solely those of theauthorand do not necessarily represent those of John Crowley (Maidstone)Ltd.-- Real people for the virtual world. http://www.elirion.net
-- -ATD- ------------------------------------------------------------- Secure Network Operations | Strategic Reconnaissance Team http://www.snosoft.com | recon () snosoft com Cerebrum Project | cerebrum () snosoft com -------------------------------------------------------------
Attachment:
signature.asc
Description: This is a digitally signed message part
Current thread:
- Re: Interesting One, (continued)
- Re: Interesting One John Orr (Oct 29)
- Re: Interesting One Brad (Oct 30)
- RE: Interesting One Dan Darden (Oct 30)
- Re: Interesting One John Dow (Oct 30)
- RE: Interesting One Mark Ribbans (Oct 31)
- Re: Interesting One Jac (Oct 31)
- RE: Interesting One David (Oct 31)
- Re: Interesting One Carol Stone (Oct 29)
- RE: Interesting One Greg van der Gaast (Oct 30)
- Re: Interesting One James Taylor (Oct 30)
- Re: Interesting One ATD (Oct 31)
- RE: Interesting One Dozal, Tim (Oct 29)
- RE: Interesting One Tom Matthews (Oct 30)
- RE: Interesting One Paul Carroll (Oct 30)
- Basic Question only Christopher Rea (Oct 31)
- RE: Interesting One David (Oct 31)
- Re: Interesting One Jack Crone (Oct 30)
- RE: Interesting One Martijn Dunnebier (Oct 30)
- RE: Interesting One Trevor Cushen (Oct 30)
- RE: Interesting One Nero, Nick (Oct 30)
- RE: Interesting One Tim Donahue (Oct 30)
(Thread continues...)
- Re: Interesting One John Orr (Oct 29)