ATTACK CANCELING DEVICE, ATTACK CANCELING METHOD, AND COMPUTER READABLE MEDIUM

摘要

An attack start time point identification unit (223) identifies an attack start time point at which an attack is started on a sensor (112) that outputs sensor data of each time point, based on the sensor data of each time point, the sensor data of each time point expressing a status at each time point of a control target (101) on which an actuator (111) operates. An attack canceling signal generation unit (224) generates an attack canceling signal series, being an actuator control signal series for restoring the status of the control target to a status of a time point that is before the attack start time point, based on at least one or the other of a sensor data series of since the attack start time point and an actuator control signal series of since the attack start time point.