Communication system, moving object, and communication method

A communication system including a communication device configured to execute a process related to a cyber security solution in accordance with policy information defining execution details of the process related to the cyber security solution, the communication system comprising:

• a processor configured to:
• change the policy information, wherein the processor facilitates a communication with another communication device to execute the process related to the cyber security solution and monitors for an improper state based on a number of received signals detected in the communication,
• wherein the processor changes the policy information in response to a transition of a state of the communication device in a process of manufacturing the communication system from a first state where the communication device is physically connected to the communication system to a second state where a process of writing information for the process related to the cyber security solution of a storage device is complete so that the process related to the cyber security solution in the second state is added to the execution details, and
• wherein the processor is further configured to change the policy information, subsequent to the transition of the state of the communication device in the process of manufacturing the communication system, transition to a state where an inspection process, which is executed in response to the transition to the second state, is completed, so that the monitoring of the improper state in the communication is added to the execution details.