ATTACKS ON VANET SECURITY

VANET is an emergent technology with a promising advantages but having high challenges in its security. VANET is a self-organizing network established among vehicles equipped with communication facilities. A lot of works have been done towards VANET but less attention is given to security of VANET. VANET is a Key component of intelligent transportation systems (ITS) and it can be used to improve road safety and allow a wide variety of different value-added services. Many forms of attacks against VANETs have emerged recently which compromise the security of such networks. Secure communication is a prerequisite for adopting VANET communication as a solution for the various applications. Delay or alteration of message in VANET application makes VANET environment non Trustable. In this paper we have done the analysis on different types of attacks on VANET security. We represented VANET Characteristics with security challenges and constraints. VANET attackers are represented into different categories based on their nature and the based on security services requirement