A Review on Security Challenges in V2X Communications Technology for VANETs

The Vehicular Ad-hoc Network (VANET) is emerging as a new networking/communication model that offers remarkable approaches for controlling and managing vehicular traffic. In this scenario, Virtual traffic light (VTL) techniques, advanced navigation support, and fleet management facilities attempt to handle traffic management and control concerns by leveraging vehicular network communication paradigms. The most important communication models in vehicular networks are characterized as vehicle-to-everything (V2X) communications technology. In V2X communications, security issues, and related countermeasures are crucial, as they are in other wireless technologies. Our survey provides a systematic overview of various research directions by highlighting and investigating the most critical V2X security issues and related countermeasures. First, we discuss the points mentioned in the previous papers, including the architecture, main characteristics, and communication models of the V2X networks. Furthermore, some of the most significant applications of these mission-critical networks reported in the published papers and the main security challenges and requirements will be highlighted. We also arrange corresponding (existing) resources, to investigate different solutions for securing V2X communications. Finally, a few suggestions for future research related to V2X security challenges are presented. In general, this article reviews and summarizes the studies of the last ten years. This survey will help make it easier for scholars studying V2X communication security and related fields to keep track of the academic frontier, by offering a sufficiently clear landscape and a roadmap.