Effect Sybil attack on security Authentication Service in VANET

VANETs are a kind of mobile ad hoc network (MANET) that provides a wide range of safety applications to vehicle passengers. VANETs are gaining popularity as a measure of the capacity to connect to a diverse set of unseen services. VANETs also enable road operators to monitor and monitor cars in order to reduce risky driving and give prompt relief. However, these networks create design, routing, communication, and security challenges. These networks are subject to a number of security vulnerabilities due to the utilization of wireless communication channels. When a malicious vehicle or RSU can assume several identities, it offers one of the most serious threats to the survival of such networks. VANET is susceptible to a range of assaults because to its lack of infrastructure. The Sybil assault is one of them. A malevolent vehicle in a V ANET may transmit false messages about traffic, an accident ahead, a road restriction, and so on. This may force the driver to take a diversion, placing him in danger of an unfavorable incident. V ANET has shown a variety of issues. The security service technologies that are available, as well as the corresponding processing algorithms. This article discusses the problems of the Sybil attack in VANE T technology. Also, this research will investigate and discuss recently proposed approaches for the Sybil attack.