EVALUATION DEVICE, EVALUATION SYSTEM, AND EVALUATION METHOD

An evaluation device (101) for evaluating security of an electronic control system in which a plurality of electronic control units are connected to a bus used for communication includes a holding unit (202) that holds attack procedure information (108) indicative of contents and a transmission order of a plurality of frames, a transmitting unit (201a) that transmits the plurality of frames to the bus in the transmission order indicated by the attack procedure information (108), a monitoring unit (200) that monitors an actuator unit controlled by any of the plurality of electronic control units, and an evaluating unit (206) that makes the evaluation on basis of a monitoring result obtained by the monitoring unit (200) when the transmitting unit (201a) transmits the plurality of frames to the bus.