CROSS-TEE: A Distributed Trusted Execution Environment Architecture for Cross-Module Automotive Security

Connected vehicles face security threats like malicious injection attacks on the CAN bus (the network that lets different car components communicate) and eavesdropping on in-vehicle communications. Researchers propose CROSS-TEE, a distributed trusted execution environment (TEE, a secure area of a system isolated from regular software) architecture that protects vehicle systems by isolating trusted applications, checking CAN bus requests before they run, and encrypting data sent over networks.