RE: Dithering (was Re: FWD [forteana] [More steganography] Hiddenwebcodes could be linked to Bin Laden)

From: Harvey Newstrom (
Date: Sun Oct 14 2001 - 16:48:40 MDT

James Rogers wrote,
> Actually, I'm having difficulty fitting the "adding noise makes
> it easier to
> eliminate noise" concept into the algorithm spaces that I am familiar with
> that deal with these very things.

I think you mistake my meaning. I am not talking about adding noise. I am
talking about analyzing existing "noise" to see if it is a hidden message.

When I speak of "more noise", I mean we have more of a sample to analyze.
If the "noise" is a hidden message, the larger percentage it takes up, the
easier it becomes to detect. Increasing this kind of "noise" makes it more
detectable if it is a message, or less likely to be a message if it does not
become more detectable.

I am merely saying that having more data makes statistical analysis easier.

Harvey Newstrom <>
Principal Security Consultant, Newstaff Inc. <>
Board of Directors, Extropy Institute <>
Cofounder, Pro-Act <>

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