chapter  1
22 Pages

Anti-Spam Technologies

Huge amount of spam not only wastes resources but also brings severe threats to computer system security. To cope with these problems, researchers have conducted extensive researches on anti-spam technologies. This chapter presents the history, current situation, and latest advances in researches on anti-spam technologies in detail. First, this chapter describes and discusses current anti-spam techniques, including legal means, e-mail protocol methods, simple techniques, and intelligent approaches. Then, intelligent anti-spam techniques, which are the most widely used and researched recently, are introduced and analyzed from two aspects: feature extraction approaches and classification methods. After that, performance evaluation methods and benchmark corpora for spam filtering are given. Finally, this chapter summarizes the current anti-spam techniques, and points out the directions of anti-spam researches in the future.