Overwrite

Data stored on magnetic disk media can be recovered using
sophisticated analysis techniques. This means that, for
example, even if some your old file was overwritten by new
data, maybe it's still recoverable. Overwrite is a UNIX
utility that try to make harder data recovering. What overwrite
does is to overwrite files using random patterns and deterministic
patterns, as suggested in the Peter Gutmann's paper "Secure
Deletion of Data from Magnetic and Solid-State Memory". 

Disclaimer

There are no proofs about the fact that overwrite works, I'm
just able to check that overwrite is able to overwrite the files
with specific patterns but I've no proofs that this makes the
data harder to be recovered. Also it's possible that if you use
some type of hard-disk, file system, operative system, overwrite
will NOT able to overwrite the file correctly. Use it at your risk. 

License

This software is under the GPL license 

The overwrite homepage is located at:

	http://www.kyuzz.org/antirez/overwrite.html

Cryptographic signatures and checksums may be provided by 
the developers at the URL(s) above.  Wiretapped recommends
that users check these before use of the software/information.