Investigation on a wide variety of threats and protective measures for the VANET

Abstract

Vehicular network is a kind of dynamic network where vehicles move freely in defined road map. In the VANET road side unit (RSU) play the important role to controlling and monitoring the vehicles in the network, every vehicles under the surveillance of RSU because in the dynamic network trust reputation is very poor between vehicles. In the new era of technology vehicular communication provide real time information of road information i.e. warning message, accidental information, congestion etc. To adaptability of VANET in real time scenario having some hurdles such as poor network connectivity, security challenges and dynamic network (frequently changes topology). In this paper investigate the security challenges, different types of attack and their prevention mechanism for vehicular communication. The dynamic network is highly vulnerable network because number of mis-activity exist in the network during communication i.e. data gathering by malicious users, grayhole, blackhole, route capturing, denial of service, Sybil attack etc.  The investigation of attack and security measures shows that some of attack easy way to detect and prevent by various security techniques. But some of attacks is easily not detected because topology of VANET are frequently changes the position of vehicle which creates hurdle to get complete information of attacker node in real time. To increasing the security of VANET it’s require depth behaviour analysis of attacks and apply classify proper attack with its preventive measures. In future implement security system using vehicle location, depth behaviour analysis, activity analysis and vehicle identity based attack detection system and collaborative security system for VANET network.