Usable Stego

[jim.halfpenny at gmail.com (Jim Halfpenny)]

 I'm not familiar with PDF watermarking tool but metadata springs to
mind as the place to store it. How about non-printable (or at least
non-sensible) ASCII or Unicode signatures added to each copy? It would
be hard to see with the naked eye but would be damaged if the metadata
is stripped from the file.

Which makes me wonder if there are any tool to strip out PDF metadata.
Anyone know of such a tool?

Jim

On 8/10/09, Ali Emirlioglu <ali.emirlioglu at gmail.com> wrote:
> While were on the subject of usable stego for legit purposes, does anyone
> know of any free software that does PDF stego? I've been asked to find ways
> to forensically watermarking a PDF ebook.
>
> Cheers,
> Ali
>
> On Sun, Aug 9, 2009 at 10:52 AM, Adrian Crenshaw
> <irongeek at irongeek.com>wrote:
>
> > Ok, I'm prepping up for my Anti-Forensics class, and I'm looking into
> > steganography. All the tools I've looked at seem to be too much of a pain
> > in
> > the butt for me to see folks using them to hide their pr0n stash or
> > illicit
> > business practices. Passing messages, maybe. Anything out there that you
> > would see as useful? Maybe something that lets you mound a large AVI or
> > something as a drive and lets you randomly add and remove files?
> >
> > On a side note, can you think of a time when stego is used as something
> > more than a parlor trick?
> >
> > Adrian
> >
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