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There is an urgent need of effective trust management for vehicular ad-hoc networks (VANETs), given the dire consequences of acting on false information sent out by malicious peers in this context. In this paper, we first discuss the challenges for trust management caused by the important characteristics of VANET environments. We then survey existing trust models in multi-agent systems, mobile ad-hoc networks (MANETs) and VANETs, and point out their key issues. Based on these studies, we suggest desired properties towards effective trust management in VANETs, setting up clear goals for researchers in this area.
Jie Zhang (Tue,) studied this question.