Filtering Spam:

New Perspectives on the False-Positive/
False-Negative Tradeoff

Agenda

Background of Spam

Attempts to Stop Spam

Attempts to Stop Spam

Attempts to Stop Spam

Attempts to Stop Spam

Attempts to Stop Spam

Attempts to Stop Spam

Recap: Attempts to Stop Spam

Filtering Errors

The Reality of the Tradeoff

Addressing the Tradeoff: Choices

Measuring Filtering Accuracy

Measuring Filtering Accuracy

What to Filter?  Requested, Bulk

The Fundamental Problems

Empirical Project: Do filters agree?

Empirical Project: Do filters agree?

Anticipated Empirical Results

Discussion

Possible Discussion Points