On Thu, 12 Jul 2001 20:53:45 +0200, Bernie <[EMAIL PROTECTED]> wrote:

> Sam H. wrote:
>> BTW, here is a good "killfile" utility.  It is not one of the
>> best, but it is certain to render a file unrecoverable by ordinary
>> mortals like us:
> (snip)

> Nice. However it's not a good utility. It's probably good enough for any
> data you believe to be sensitive however, especially since most people
> don't even know about "undelete".
> For a good one you need to write random values to the old location of the
> file. With the BATch file the file you want "killed" might be larger than
> command.com, and the data used to overwrite it isn't random. A good program
> also does this atleast seven times since that's when it's assumed to be too
> costly to recover it.
> //Bernie

It is a good utility.  As I said, it is not one of the best.  If you
undelete the killed file it will be extremely difficult to recover any
of the original data because it has all been overwritten by a very
densely compacted file.  The help section in the batch file explains
that if the file to be obliterated is larger than COMMAND.COM then
not all of the original data will be overwritten.  All of my disclaimers
are appropriate.  The utility is indeed a good one, but it is not good
enough to provide sufficient security for the most highly sensitive data.
Some snoops have the sophisticated resources and the funding necessary
for the data recovery project.  They will attempt to recover it only if
they think the data is valuable enough to justify the very high cost.
Ordinary mortals like us lack the power of commanding a most devotedly
worshipped resourse, being money.

Sam Heywood
-- This mail was written by user of The Arachne Browser - http://arachne.cz/

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