Re: Re: Strange mail with number in subject line and body
"Jamie Riden" <[email protected]> Thu, 8 Jun 2006 11:05:45 +1200
| Newsgroups | gmane.comp.security.incidents |
|---|---|
| Message-ID | <[email protected]> |
On 08/06/06, Christine Kronberg <[email protected]> wrote: > On Wed, 7 Jun 2006, [email protected] 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 / [email protected] / [email protected] NZ Honeynet project - http://www.nz-honeynet.org/ ------------------------------------------------------------------------------ This List Sponsored by: Black Hat Attend the Black Hat Briefings & Training USA, July 29. August 3 in Las Vegas. World renowned security experts reveal tomorrow.s threats today. Free of vendor pitches, the Briefings are designed to be pragmatic regardless of your security environment. Featuring 36 hands-on training courses and 10 conference tracks, networking opportunities with over 2,500 delegates from 40+ nations. http://www.blackhat.com ------------------------------------------------------------------------------