Abstract: Automobiles such as smart cars have become tremendously complex, as they are allowing us to connect our phones to user interfaces of car and connect with external networks as well. Unfortunately, the interconnectivity of cars, embedded processors and systems developed in the vehicles have become targets of cybersecurity attacks making it the biggest challenge with respect to cooperative automotive industry. The real issue is caused when a spoofed message is injected in the internal network of the system compromising the security of the automobile. This paper will aim at providing a solution to secure the private information of each automobile by using cryptographic algorithm for authenticating the message. Upon successful failing of the cyber-attack a notification will be displayed to the User Interface (UI) of the automobile to keep the user aware of the situation.