Live spam-catching contest at CEAS

noodleburglar writes "The 2007 Conference on Email and Anti-Spam (CEAS) will feature a live spam-catching contest. Entrants will be treated to a torrent of spam and must use their spam filtering technique to filter out as much as possible, while also letting legitimate messages. My money's on Spam Assassin." This ought to be a sweeps week television spectacular.

Comments

CRM114

[sageFool]

http://crm114.sourceforge.net/ using hyperspace! It's been working better than spam assassin for me.

Group spam detection

[Animats]

Gmail, like SpamCop, has a group spam filter system. It looks at mail sent to a large number of recipients. The defining characteristic of spam is that it's sent to a large number of recipients, after all. If you're in a position to watch the incoming mail of a few million mailboxes, detecting spam is easy.

Re:Group spam detection

[kebes]

You're right--but the size of Gmail gives them another advantage. In those marginal cases where the spam filter isn't sure about an email (is this spam or a mailing list?) it has the advantage of having a huge number of people checking all the emails. That is, the users do the final check.

I have received a spam to my gmail account exactly once. And when I did, shocked, I clicked the "mark as spam" button. The point is that this spam was probably sent to millions of Gmail users, and the algorithm wasn't sure how to categorize it. But because I clicked "spam" (and probably a few other people did, too), it was marked as spam for everyone. So most users never say it in their inbox. Thus only a dozen out of the million recipients was ever bothered by the spam. Conversely, an email list would receive no (or very few) "mark as spam" clicks, and would be allowed to pass. So basically the Gmail userbase acts the workforce to continually train the spam filter, and moreover to detect new spam within minutes of it being sent.

It's hard to beat a system like that. But the point is that it relies on the large number of users who are all (effectively) sharing their spam training sets with each other in realtime.

This is not to say that the baseline algorithm that Gmail implements isn't quite effective, but the point is that Gmail can use the users to resolve those tricky false-positive and false-negative situations.

Curious:When urologists email each other...

[dpbsmith]

... are they able to refer to Pfizer's brand name for sildenafil, Lilly's name for tadalafil, or Bayer's brand name for vardenafil without getting caught in the spam filters?

The prize list :)

[davidwr]

1st prize: Job offer from a security-software vendor
2nd prize: Lifetime supply of Hormel meat products
3rd prize: Commemorative tin of SPAM meat product
Last place: Inheritance from Nigerian Prince

Professional spammers in attendance?

[MobyDisk]

I wonder if professional spammers will attend the conference to learn how to get through the next generation of filters. Maybe it would be like playing spot the Fed at the hacker's conferences.

The First Annual Greased Spammer Contest!

[Penguinisto]

(cue Monster Truck Rally announcer guy voice...) THIS SATURDAY AT THE EXPO CENTER! The Best admins and the worst spammers come together in a throwdown-showdown-lowdown Greased Spammer Contest! We kidnap, strip, and grease down every known spammer we can find on Planet Earth! We bring 'em here, then we give our lucky mail server admins (as determined by lottery) a chance to catch 'em! The spammers will be released into a large pit, where the admins may use any method to catch and immobilize spammers (firearms and other projectile weapons are excluded). Points will be given for the number of spammers caught, the methods of capture, and the level of eye-rattling violence applied to each spammer after their capture! Watch as the winning admin gets to publicly execute the dreaded Sanford Wallace by any method that he or she can dream up! Any method at all! You'll buy a ticket for the whole seat, but you will only need the edge! Get your tickets at the Mondotix - DON'T MISS IT!(/voice)

/P