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Structured overlays are an important and powerful class of overlay networks that has emerged in recent years. They are typically targeted at peer-to-peer deployments involving millions of user-managed machines on the Internet. In this paper the authors address routing-table poisoning attacks against structured overlays, in which adversaries attempt to intercept traffic and control the system by convincing other nodes to use compromised nodes as their overlay network neighbors. In keeping with the fully-decentralized goals of structured overlay design, the authors propose a defense mechanism that makes minimal use of centralized infrastructure.
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