Information security of the steer-by-wire vehicle means protecting the steering instructions of electrical signal transmission from threats, interference and destruction. In recent years, intelligent connected vehicles related to information security have been seriously threatened by hackers. Thus, information security is one of vital issues for steer-by-wire vehicle systems. This paper presents a tube model predictive control scheme for a 4-wheel steer-by-wire vehicle, in which the event-triggered strategy is adopted in order to prevent potential opponents from attacking and ensure the information security. This scheme uses event trigger control to select control channels, and provides sufficient conditions for power exponential stability according to the Lyapunov stability theory, then designs event trigger conditions. In addition, the model predictive control is used to predict the future dynamic information in order to ensure the safe driving of the vehicle under the attack of potential opponents. Simulation results show that the proposed scheme is capable to deal with hacking attacks.