Automotive Network Security

Today automobiles are no longer mere isolated mechanical devices, but are increasingly connected to the outside environment, e.g. V2I(Vehicle-to-Infrastructure), V2V(Vehicle-to-Vehicle), V2C(Vehicle-to-Cloud) and V2X(Vehicle-to-Everything)[1]. The high degree of connectivity makes vehicles exposed to a range of security and privacy threats. The increasingly interconnected demand of a vehicle’s control modules means there is no safety without security.In this paper we describe the vulnerability of CAN and Ethernet automotive buses. We present the multiple domain CAN buses connected to a high speed Gigabit automotive Ethernet. We describe backend computers and central computing gateways provide layered security. We explain that Hardware Security Modules and Message Authentication Code (MAC) in CAN frame will increase security. We suggest ways to protect automotive Ethernet bus.