Anirudh Ramachandran, Nick Feamster. Understanding the network-level behavior of spammers. In Luigi Rizzo, Thomas E. Anderson, Nick McKeown, editors, Proceedings of the ACM SIGCOMM 2006 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communications, Pisa, Italy, September 11-15, 2006. pages 291-302, ACM, 2006. [doi]