As autonomous vehicles have become more commercially available in recent years, security measures against hacking technology have become a major issue. Hacking into autonomous vehicles can threaten control systems, steal sensitive information, and in some cases cause accidents and physical harm to vehicle occupants. The security of autonomous vehicles is deeply related to safety. Autonomous vehicles that rely on wireless connections are considered particularly vulnerable to hacking attacks because they are a technology that combines internet connection devices and automobiles. As technology advances, hacking techniques become more complex and lead to serious crimes, and security measures must be addressed accordingly. Hacked autonomous vehicles can be remotely controlled to pose a great physical danger and can be used for other crimes, so it is important to contain them before they escalate. This article investigates the risks of hacking in autonomous driving systems, explores the actual condition, and proposes technical solutions and regulatory and policy solutions.