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IFIP Advances in Information and Communication Technology
Due to open and anonymous nature, online social networks are particularly vulnerable to the Sybil attack, in which a malicious user can fabricate many dummy identities to attack the systems. Recently, there is a flurry of interests to leverage social network structure for Sybil defense. However, most of graph-based approaches pay little attention to the distrust information, which is an important factor for uncovering more Sybils. In this paper, we propose an unified ranking mechanism bydoi:10.1007/978-3-662-43813-8_6 fatcat:byuusdhklngnvkdetzrjk32gam