Patrick P. Tsang, Sean W. Smith. Combating Spam and Denial-of-Service Attacks with Trusted Puzzle Solvers. In Liqun Chen, Yi Mu, Willy Susilo, editors, Information Security Practice and Experience, 4th International Conference, ISPEC 2008, Sydney, Australia, April 21-23, 2008, Proceedings. Volume 4991 of Lecture Notes in Computer Science, pages 188-202, Springer, 2008. [doi]
Abstract is missing.