>From: Graywolf [mailto:[EMAIL PROTECTED] >Sent: Thursday, May 19, 2005 8:28 PM >To: [email protected] >Subject: Re: Paranoid question of the week... > >Well, the fornistic types claim they can now copy files from a >hard drive that has been rewritten multiple times and bulk >erased. So if you need real data security I recommend total >distruction of the drive.
>From magentic disk it is often possible. CF (flash memory) is a different, solid state technology that does not suffer from imprecisions of mechanical movements. I very much doubt that once you erase the previous contents of the flash memory block and overwrite it with new contents (like zeroing everything), there's any residual charge left that would permit the identification of the old contents. I belive a single overwrite would do. >Or you can just encrypt everything with PGP and not worry too >much about actually erasing it. The original question was about CF card (from the camera, I assume). That would require in-camera PGP software. Government budget is likely to be able to break through PGP, though. Disclaimer: I'm better with computers than with my camera. Still, I'm no hardware expert. If you (that is, original poster) have serious concerns about this, you should consult an expert in the field. Cheers, Leon
