Spam Filtering With Dynamically Updated URL Statistics
Jangbok Kim, Kihyun Chung, Kyunghee Choi · IEEE Security & Privacy · 2007
Many URL-based spam filters rely on "white" and "black" lists to classify email. The authors' proposed URL-based spam filter instead analyzes URL statistics to dynamically calculate the probabilities of whether email with specific URLs are spam or legitimate, and then classifies them accordingly.