Survey on Security Attacks in Software Defined VANETs

With the evolution of the automotive industry and telecommunication technologies, an increasing number of vehicles are connected to achieve the intelligent transportation system (ITS) framework. The safety of road users is a major concern in ITS. A Vehicular ad hoc network (VANET) is an innovative technology that provides a wide range of services for its users, such as safety, efficient traffic management, and infotainment. However, the dynamic nature of the vehicular environment forces VANETs to deal with several issues like intermittent connectivity, unstable quality of service (QoS), and the hetero-geneity of on-board systems and applications. Furthermore, the implementation and deployment of new services/protocols on a large-scale is an arduous task due to the high mobility and unstable nature of VANETs. The introduction of software-defined vehicular networks (SDVNs) features such as programmability and flexibility to relieve the pressure of vehicular network to meet the performance imperatives of VANET. In this paper, first we present the SDVN architecture and communication modes. Then we survey the security threats that VANETs may be subject to.