Accessing risk priority of SSL SYN attack using game theoretic attack defense tree model for VANETs

Vehicular Ad-hoc Networks (VANETs) are prone to several types of attacks due to their decentralized nature and mobility. The involvement of traffic and human beings makes it important to secure VANETs to a maximum extent. There is an urgent need to move one step ahead of just preventing the attacks. We need to have a mechanism that can access and analyze the risk priority of an attacker's way of attacking and defender's way of defending. The attacker may have several ways for achieving his goal of causing damage and every way has a different severity and impact. So, the assessment of all these ways can help the defender to get the insight into the psyche of attacker. This assessment will definitely help the society to get prevention from such unwanted attacks. In this paper, a risk priority assessment model of SSL SYN attack is designed using attack-defense tree model in VANETs. Attack-defense tree model is used to analyze and present the approaches used by attackers to achieve SSL SYN attack. A game theoretic approach is adopted by attacker and defender to maximize their objectives. The rationality of the attack defense model using game theory is investigated using risk priority number on the basis of severity, occurrence and detection ratings. The mathematical assessment shows the impact of this work.