Information processing device, information processing method, and recording medium

An information processing method performed by a processor included in an information processing device that processes information about a first vehicle and information about a second vehicle, the information processing method comprising:

• obtaining incident information about an incident of a cyberattack that occurred in a vehicle;
• obtaining second vehicle information about a state of the second vehicle via communication with the second vehicle;
• determining a risk level of a vehicle function of the second vehicle based on a degree of matching between the incident information and the second vehicle information;
• and
• generating and outputting a function restriction command for restricting a vehicle function of the first vehicle corresponding to the vehicle function of the second vehicle, when the risk level is higher than a first criterion.

A non-transitory computer-readable recording medium having a program for use in an information processing device that includes a processor and a memory, the information processing device processing information about a first vehicle and information about a second vehicle, the program, when executed by the processor using the memory, causing the processor to execute:

• obtaining incident information about an incident of a cyberattack that occurred in a vehicle;
• obtaining second vehicle information about a state of the second vehicle via communication with the second vehicle;
• determining a risk level of a vehicle function of the second vehicle based on a degree of matching between the incident information and the second vehicle information;
• and
• generating and outputting a function restriction command for restricting a vehicle function of the first vehicle corresponding to the vehicle function of the second vehicle, when the risk level is higher than a first criterion.