A non-transitory computer-readable recording medium storing a control program causing a computer to execute processing, the processing includes: displaying a first node of a first type and a second node of a second type; receiving registration of a third node representing an access destination in association with the first node; receiving registration of a fourth node representing mask processing on information in association with the second node; receiving registration of a fifth node representing an information category in association with the second node; allowing transmission of information about a cyber attack event to the third node; and providing the information about the cyber attack event after executing the mask processing associated with the fourth node on information belonging to the information category associated with the fifth node, when the information about the cyber attack event is transmitted to the third node.