Connected Car Security

Smarter Security for Smart Cars

Cars are changing.

Smart cars, cars that adopted ICT for an easier and safer driving, are now being commercialized. Now, a car becomes a wheeled data center and the car manufacturer becomes a software developer. However, the important fact that many glaze over is the issue of security.

Internal Network of a Vehicle

Electronic equipment controls all areas of a vehicle, including driving, brakes, steering, and various sensors.


The vehicles manufactured these days are mounted with more than 100 Electronic Control Units(ECUs).

When all ECUs are networked and information is collected from the ECUs, all information can be understood comprehensively, and each unit can be controlled. An automotive company can use the information collected from the ECUs to manufacture a safer and more convenient vehicle, and a driver can be provided with automated value-added services based on the vehicle driving information.

However, for now, unencrypted information is transferred to the internal network of the vehicle.

As such, the impossibility of ensuring data integrity means that someone other than the driver may manipulate the vehicle remotely, and this is a very serious problem. If someone threatens a driver’s life by malfunctioning the steering device or stopping the engine while the driver is driving a car, it may lead to a huge accident that can kill the driver and/or pedestrians.

The security accident of a company is just the loss of information; however, the security accident of a smart car can threaten people’s lives.

V2X = V2V + V2I + V2M

There are different networks that one needs to consider when thinking about car security – not simply within the vehicle in itself.


V2V = Vehicle-to-Vehicle

When a smart car is connected to another smart car, it becomes a connected car.

Through the Communication Control Unit (CCU), a car can communicate with another car to transfer traffic-related information, including traffic status. Communication between a car and a neighboring car helps to prevent car accidents in advance and allows the car to be driven in a more secure way through a temporary network, including roadside units and cars.


V2I : Vehicle-to-Infrastructure

With the infrastructure, a smart car configures a traffic system.

Through road-side units (RSUs) that communicate with cars, smart cars can configure a comprehensive network and be provided with various services. The RSU communicates with cars on the road to reduce traffic and provide the drivers with a more agile navigation system. In addition, they help to provide multimedia content and various value-added services to the drivers.


An Information Transportation System (ITS) is configured by integrating the elements of the existing traffic systems such as cars, RSUs, and roads and signaling systems. Through the ITS, the efficiency and safety of traffic can be enhanced dramatically.


V2M / V2D

V2M : Vehicle-to-Mobile / V2D : Vehicle-to-Device

A car is connected to a mobile device, such as the smartphone of a driver.

A driver can figure out the status of the car and which element should be maintained by using a smart device such as smartphone or tablet. In addition, he or she can control the car remotely. A smart car can assume the role of a smart device and provide totally new experiences to the user.