SybilShield: An Agent-Aided Social Network-Based Sybil Defense Among Multiple Communities

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Provided by: Institute of Electrical & Electronic Engineers
Topic: Security
Format: PDF
Lacking trusted central authority, distributed systems have received serious security threats from sybil attack, where an adversary forges identities of more than one node and attempts to control the system. By utilizing the real-world trust relationships between users, social network-based defense schemes have been proposed to mitigate the impact of sybil attacks. These solutions are mostly built on the assumption that the social network graph can be partitioned into two loosely linked regions - a tightly connected non-sybil region and a sybil region.
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