On Fri, Jan 07, 2000 at 10:05:45AM +1100, Ken Yap wrote:
> Actually this may not be as secure as you think. All it probably does is
> set the file length to zero, but the data blocks will still be on disk,
> though liable to be claimed by another file soon. So a trawl through
> the disk might find the blocks. And it seems data recovery techniques
> can drag out data from the disk. However short of your user taking over
> the root account or kidnapping your disk for data recovery...
~> apt-cache show wipe
Package: wipe
Version: 0.16-1
Priority: extra
Section: utils
Maintainer: Thomas Schoepf <[EMAIL PROTECTED]>
Depends: libc6 (>= 2.1), libc6 (>= 2.1.2)
Architecture: i386
Filename: dists/unstable/main/binary-i386/utils/wipe_0.16-1.deb
Size: 29288
MD5sum: f398389bec4a6423bea1f17de76aedde
Description: Secure file deletion
Recovery of supposedly erased data from magnetic media is easier than what
many people would like to believe. A technique called Magnetic Force
Microscopy (MFM) allows any moderately funded opponent to recover the last
two or three layers of data written to disk. Wipe repeatedly writes special
patterns to the files to be destroyed, using the fsync() call and/or the
O_SYNC bit to force disk access.
.
Homepage: http://altern.org/berke/wipe/
installed-size: 63
--
- Gus
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