• Spam volatility (presented at the 2004 MIT Spam Conference), available in two forms:
  • The Myth of Spam Volatility
    (Mostly nontechnical introduction, intended for the intelligent layperson)

  • The More Things Change: Volatility and Stability in Spam Features
    (Transcript of MIT presentation, with overheads; intended for statistically comfortable readers)

• Virus Bulletin Spam Supplements
  • It's a Small (Spam) World, After All (July 2004)

Experimental data
As a public service, QAQD.com makes selected experimental data available without charge to members of the academic/research community.

• Spam features
  This is an archive of historical spam data, collected from eight different domains between January 2001 and December 2004. Although security and privacy concerns preclude access to the original raw messages, the archive contains some 7,100 messages represented as feature vectors, using the ruleset from SpamAssassin 2.6.

  Access is restricted. Contact QAQD.com for more information.