A survey on attacks, security and trust management solutions in VANETs

Vehicular Ad hoc NETwork (VANET) is an emerging paradigm in networking. It is a new form of Mobile Ad hoc NETwork (MANET). VANET enables vehicle to vehicle (V2V) communication with the goal of providing road safety and reduce traffic congestion. However, dishonest (malicious) peers (vehicles) in a VANET many send out false information to maximize their own utility. Now a day, VANET has been taken more attention of researchers and automotive industries due to life saving factor. In this paper, we first discuss the applications and unique characteristics of VANETs that distinguish them from MANETs. We also discuss about different attacks and security issues in VANET. We then survey existing trust models in VANETs, and point out their key issues. Based on these studies, we suggest desired properties towards effective trust management in VANETs.