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27th International Conference on Distributed Computing Systems (ICDCS '07)
An Empirical Study of Collusion Behavior in the Maze P2P File-Sharing System
Toronto, Canada
June 25-June 27
ISBN: 0-7695-2837-3
Qiao Lian, Microsoft Research Asia, Beijing, China
Zheng Zhang, Microsoft Research Asia, Beijing, China
Mao Yang, Microsoft Research Asia, Beijing, China
Ben Y. Zhao, U. C. Santa Barbara, Santa Barbara, CA
Yafei Dai, Peking University, Beijing, China
Xiaoming Li, Peking University, Beijing, China
Peer-to-peer networks often use incentive policies to encourage cooperation between nodes. Such systems are generally susceptible to collusion by groups of users in order to gain unfair advantages over others. While techniques have been proposed to combat web spam collusion, there are few measurements of real collusion in deployed systems. In this paper, we report analysis and measurement results of user collusion in Maze, a large-scale peer-to-peer file sharing system with a non-net-zero point-based incentive policy. We search for colluding behavior by examining complete user logs, and incrementally refine a set of collusion detectors to identify common collusion patterns.We find collusion patterns similar to those found in web spamming. We evaluate how proposed reputation systems would perform on the Maze system. Our results can help guide the design of more robust incentive schemes.
Citation:
Qiao Lian, Zheng Zhang, Mao Yang, Ben Y. Zhao, Yafei Dai, Xiaoming Li, "An Empirical Study of Collusion Behavior in the Maze P2P File-Sharing System," icdcs, pp.56, 27th International Conference on Distributed Computing Systems (ICDCS '07), 2007
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