full-disclosure - Advances in Spamming Techniques

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From: david at crlf.net (David Maxwell)
Subject: Advances in Spamming Techniques

On Fri, Jul 25, 2003 at 07:41:16PM -0500, Paul Schmehl wrote:
> On Fri, 2003-07-25 at 16:38, security snot wrote:
> > 
> > Recently I've also observed certain advances on bypassing spam filters,
> > which are being actively exploited out in the wild.  Since this is
> > apparently a serious security-related matter (unsolicited email) I thought
> > I might share the body of this email with this list, so that everyone can
> > know what to watch out for in the future, and begin to develop better
> > antispam security filters.
> > 
> None of this will get past Bayesian filters.

However, a related technique which I've seen lately is that of appending
a couple of paragraphs of non-spam text, in an attempt to out-weigh the
spamminess of the other content.

It's clear that (at least some of) the spammers to enough experimenting
to conclude that this works against some spam-defense systems.

-- 
David Maxwell, david@....net|david@...well.net --> Although some of you out
there might find a microwave oven controlled by a Unix system an attractive
idea, controlling a microwave oven is easily accomplished with the smallest
of microcontrollers. - Russ Hersch - (Microcontroller primer and FAQ)