My uncle did design work on satellites and all his top secret work took place in a vault. When it came time to replace/erase his personal disk drives, all of them were physically crushed into a cube as I recall.
-----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of George Fogg Sent: Thursday, January 31, 2008 3:29 PM To: [email protected] Subject: Re: Data Erasure Products > On Jan 31, 2008, at 3:48 AM, SUBSCRIBE IBM-MAIN Niall wrote: > >> How about encrypting the volume in its entirety before deletion? >> >> I've been through the DR/deletion exercise a few times, and used an >> in-house utility to overwrite the disk. If available, however, would >> encryption not be a possible solution in that even if a shadow of the >> data were left, it should at least be in a format that is not >> readable? >> >> I ask because some sites may already have invested in an encryption >> tool, and it might be an imaginative use of an existing asset. >> > I vaguely remember a story here I cannot remember where I heard it (it > may be an urban legend). > *SUPPOSEDLY* the CIA (NSA??) was able to read a disk even after data > has been written on it, even after 10 or 11 times. > > I have heard this but where? I do *NOT* know if this is true or not. > > Ed I have worked at several top secret installations in the past and I was told that they take the old DASD and drop them in a acid bath then cut them up. Never saw it happened so not totally sure it was done or not. George Fogg ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
