EXTRA-VEHICULAR COMMUNICATION DEVICE, COMMUNICATION CONTROL METHOD, AND COMMUNICATION CONTROL PROGRAM

An extra-vehicular communication device installed in a vehicle and capable of communicating with an external device outside the vehicle includes: a control unit; and a storage unit that has a tamper-resistant secure area and stores, in the secure area, at least one of communication destination information regarding a communication destination outside the vehicle and emergency operation information regarding a predetermined operation in an emergency. When unauthorized access in in-vehicle equipment installed in the vehicle is detected, the control unit performs at least one of control of communication with the communication destination by use of the communication destination information and processing based on the emergency operation information.