INFECTION PROBABILITY CALCULATION DEVICE, INFECTION PROBABILITY CALCULATION METHOD, AND INFECTION PROBABILITY CALCULATION PROGRAM

摘要

To estimate impacts of an event caused by cyber-attacks and the like on other terminals within a network.SOLUTION: An infection probability calculation device 10 receives, amongst terminals within a network, information of a first terminal infected with malware. Then, the infection probability calculation device 10 calculates, amongst the terminals within the network, a posterior probability of the malware infection for each of second terminals, based on a probability of the malware infection for each of the second terminals having a possibility to be an infection source of the malware, the information of the first terminal infected with the malware, and network configuration definition information 122. Thereafter, the infection probability calculation device 10 calculates, amongst the terminals within the network, a probability of the malware infection for each of third terminals that are terminals other than the first terminal and the second terminals, based on the calculated posterior probability of the malware infection for each of the second terminals, and the network configuration definition information 122, and outputting the calculated result.SELECTED DRAWING: Figure 2