Incidents
Re: Re: Strange mail with number in subject line and body Jun 07 2006 04:51AM
junkmail babtras com (1 replies)
Re: Re: Strange mail with number in subject line and body Jun 07 2006 01:47PM
Christine Kronberg (seeker shalla de) (1 replies)
Re: Re: Strange mail with number in subject line and body Jun 07 2006 11:05PM
Jamie Riden (jamesr europe com)
On 08/06/06, Christine Kronberg <seeker (at) shalla (dot) de [email concealed]> wrote:
> On Wed, 7 Jun 2006, junkmail (at) babtras (dot) com [email concealed] wrote:
>
> > My best guess is that this is meant to poison the statistics of bayesian mail filters and trick them into letting spam through.
>
> Do you really think a few mails with just a number in it will have
> a noticeable effect on the filters? To me it seems more likely that
> someone uses a bot net for address verification and list washing.

Indeed - most Bayesian techniques I have seen will only look at the n
most 'useful' words in determining whether it's spam or not spam. I
just can't see any feasible way to poison this sort of scheme.

cheers,
Jamie
--
Jamie Riden / jamesr (at) europe (dot) com [email concealed] / jamie.riden (at) computer (dot) org [email concealed]
NZ Honeynet project - http://www.nz-honeynet.org/

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