What is firewall in cars?

A firewall in a car is a security system that prevents unauthorized access to the vehicle's electronic systems, protects against cyber threats, and helps to secure driver and passengers' data. It works by monitoring the incoming and outgoing traffic to and from the car's electronic components and restricting access to any traffic that does not meet specified criteria. In addition, a car firewall offers protection against malware attacks, hacking, and other cyber threats that can compromise the safety and functionality of the vehicle. Nowadays, modern cars come equipped with built-in firewall systems that are continually updated with new security protocols to keep up with potential threats.