Abstract: The vision of whole cities covered with dynamic networks of “talking cars” is gradually becoming a reality. The network thus formed is Vehicular Ad hoc Networks (VANETs). Vehicular Ad Hoc Networks (VANET) has become cynosure in the current decade. In the modern era the invention of smart vehicles have made VANET utmost important application to be implemented. But every boon has a curse hidden in it so is the case with the VANET. As VANET is an emerging research area so are its security issues. There are various attacks that can occur on VANET but the most vital is the Sybil Attack. In Sybil attack the attacking node creates multiple forge identities in order to gain a disproportionately large influence. This survey paper briefly presents various Sybil attack detection mechanism in VANET.

Keywords: VANET, MANET, Sybil Attack, Genetic Algorithm.