1. Spam and the Ongoing Battle for the Inbox Joshua Goodman, Gordon Cormack, and David Heckerman Louis Szgalsky Andrew Burns

2. Summary 1998, 10% of email spam Now, 80% of email spam New technologies used to detect spam Advances in machine learning

3. Two Main Spam Fighters Cryptograpic standards –PGP, S/MIME –Robust to attacks, but hard to implement Domain Identities –SenderID, DKIM –Use DKS to distribute key information

4. Ethics Issues Privacy Issues –People don’t want email address freely known. Resource issues –Mail serves must handle all incoming mail.

5. Opinion Good information on fight between spammers and spam-fighters Too much on how to organize research