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The information security and integrity issues associated with a mobile multimedia vehicle are examined. Due to the external connectivity of the vehicle, concerns over the integrity of the vehicle operation are raised. On one hand, the problems for the vehicle computer are similar to those encountered in the Internet environment. On the other hand, the absolute safety requirements of operating a vehicle place special constraints on the robustness of the vehicle computer. This paper describes how the architecture of the network vehicle addresses the security and integrity issues by providing physical and software separation between the vehicle control and the multimedia networks.