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A Trust Model Robust to Slander Attacks in Ad Hoc Networks

Pedro Braconnot-Velloso 1 Rafael Pinaud Laufer Otto Carlos Muniz Bandeira Duarte Guy Pujolle 1
1 Phare
LIP6 - Laboratoire d'Informatique de Paris 6
Abstract : Slander attacks represent a significant danger to distributed reputation systems. Malicious nodes may collude to lie about the reputation of a particular neighbor and cause serious damage to the overall trust evaluation system. This paper presents and analyzes a trust model robust to slander attacks in ad hoc networks. We provide nodes with a mechanism to build a trust relationship with its neighbors. The proposed model considers the recommendation of trustworthy neighbors and the previous experiences of the node itself. The interactions are limited to direct neighbors in order to scale on mobile networks. The results show the impact of slander attacks to our trust model. We analyze how the main parameters affect the trust evaluation process under a lying collusion attack. We show that our trust model tolerate almost 40% of liars.
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Pedro Braconnot-Velloso, Rafael Pinaud Laufer, Otto Carlos Muniz Bandeira Duarte, Guy Pujolle. A Trust Model Robust to Slander Attacks in Ad Hoc Networks. Workshop in Advanced Networking and Communications (ANC) jointly with ICCCN'08, Aug 2008, Virgin Islands, United States. pp.1-6, ⟨10.1109/ICCCN.2008.ECP.130⟩. ⟨hal-01303637⟩



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