A setting unit (11) sets a path or a procedure for a cyber attack that is obtained through analysis of a risk to a communication system. A collection unit (12) collects safety information that is associated with safety in terms of information security regarding the constituent apparatuses of a communication system. An evaluation unit (13) evaluates the magnitude of a security risk present in the communication system, in accordance with the path or procedure for the cyber attack, on the basis of the security information, the security risk to a constituent apparatus related to the path or procedure for the cyber attack being evaluated to be lower when inspection for information security has been carried out on the constituent apparatus related to the path or procedure for the cyber attack than when inspection for information security is not carried out.