Novel protocols to limit the impact of malicious users in distributed systems.
Haifeng Yu, Chenwei Shi, Michael Kaminsky, Phillip B. Gibbons, and Feng Xiao. DSybil: Optimal Sybil-Resistance for Recommendation Systems. In Proceedings of the 30th IEEE Symposium on Security and Privacy (Oakland 2009), Oakland, CA, May 2009
Haifeng Yu, Phillip B. Gibbons, Michael Kaminsky, and Feng Xiao. SybilLimit: A Near-Optimal Social Network Defense Against Sybil Attacks. In Proceedings of the 29th IEEE Symposium on Security and Privacy (Oakland 2008), Oakland, CA, May 2008
Haifeng Yu, Michael Kaminsky, Phillip B. Gibbons, and Abraham Flaxman. SybilGuard: Defending Against Sybil Attacks via Social Networks. In Proceedings of the ACM SIGCOMM Conference on Computer Communications (SIGCOMM 2006), Pisa, Italy, September 2006. Original Paper: [PDF] Expanded Technical Report [IRP-TR-06-01]: [PDF]