It is possible to attack a car's in-vehicle information system through malware, causing it to lose control while driving. This attack is called car hacking. The car's in-vehicle information system contains many electronic control units (ECUs) to manage various functions of the vehicle, such as engine control, brake system, steering system, etc. When the in-vehicle information system communicates with the outside world (such as through Bluetooth, Wi-Fi, cellular network, etc.), or when it is connected to external devices (such as USB storage devices), there is a risk of being invaded by malware. Once malware successfully enters the system, it may tamper with key control instructions and interfere with normal sensor data collection and processing, causing the vehicle to lose normal control, such as causing the engine to suddenly accelerate abnormally, brake failure, steering out of control, etc., seriously endangering driving safety. With the continuous improvement of the degree of intelligence and networking of automobiles, the cybersecurity threats faced by automobiles are also increasing. Major automobile manufacturers and related institutions are working hard to strengthen the security protection of automobile information systems to reduce the probability of such risks.