COMMUNICATION MONITORING DEVICE, COMMUNICATION MONITORING SYSTEM, AND COMMUNICATION MONITORING METHOD

A distribution information acquisition unit is configured to acquire distribution information including identification information of a user as a distribution destination of setting information which is used for access to a work vehicle. An access information acquisition unit is configured to acquire access information including identification information of the user who accesses the work vehicle. A fraudulence determination unit is configured to compare the identification information related to the access information with the identification information related to the distribution information to determine whether or not fraudulent access has occurred.