What is a car firewall?

A car firewall is a specialized security measure to protect the car's computer system, which is called the Electronic Control Module (ECM), from hacking and unauthorized access. It is a software or hardware-based security system that monitors and controls the flow of data between different components of the car's computer system. The firewall acts as a barrier between the internet or Bluetooth connection and the car’s ECM, preventing outside parties from accessing or interfering with the system.

There are different types of car firewalls, including network firewalls, application firewalls, web application firewalls, and host-based firewalls. These firewalls are designed to provide different layers of security protection depending on the car's features and use cases.

A car firewall is becoming more relevant as modern cars equipped with sophisticated computer systems become increasingly vulnerable to cyber threats. Car hacking incidents have been on the rise in recent years, and a car firewall provides an important layer of protection against these threats. As such, car manufacturers are increasingly incorporating firewalls in their vehicles to enhance the safety and privacy of drivers and their passengers.