System and storage medium

A non-transitory computer-readable storage medium storing instructions executed by a computer of a central control device connected to a plurality of sub-devices each having an embedded computer, wherein the instructions, when executed by the computer, cause the computer to perform:

• detecting an anomality caused by a cyberattack based on whether or not a system including the central control device and the plurality of sub-devices deviates from a normal state;
• in a case where the anomality is detected, transmitting a stop instruction to each of the sub-devices to stop an operation of the system;
• transmitting a restart instruction to each of the sub-devices to restart each of the sub-devices by secure boot after the operation of the system is stopped;
• transmitting a diagnostic instruction to at least one sub-device to diagnose whether or not physical elements configuring the system are degraded;
• and
• determining whether or not to resume the operation of the system based on a result of the restart executed in each of the sub-devices in response to the restart instruction and a result of the diagnosis executed in the at least one sub-device in response to the diagnosis instruction.