", IBM Mainframe Discussion List" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > > > In a message dated 2/11/2008 3:00:22 A.M. Central Standard Time, > [EMAIL PROTECTED] writes: > >Unless I missed a part of the discussion, all statements that > overwriting once is not good enough, were based on rumours, assumptions, > theoretical possibilities and negative evidence (data is suggested to be > readable until proven otherwise). If my video store says a video is not > available and another store can deliver it, does this prove that all > video stores that say a video is not available are lying? Is there some > report, investigation, official statement to *prove* that overwriting > once is not good enough? > > I am reminded of the epsilon-delta process that I learned in first semester > college calculus. "Good enough" for what? You supply me with the "for what" > and I'll provide you with the "good enough." If the "for what" is that you > want to sell a data erasure product to the United States Department of > Defense, then you must fulfill their minimum requirements, for which there might > theoretically be no provable basis in fact or experiment, but yet they
>....< > overwritten data may be possible, since they use only part of > the available area (differences in positioning od different writes) > and part of the available "channel" (s/n ratio, Shannon)." > > All 4 were from > _http://www.tomshardware.com/forum/138943-32-forensic-recovery_ (http://www.tomshardware.com/forum/138943-32-forensic-recovery) ) > > > Bill Fairchild > Rocket Software > Thanks Bill, this was very interesting information. It still does not provide *the* answer, but gives a little bit more solid foundation to the picture. Kees. ********************************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ********************************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
