Communication destination malignancy calculation device, communication destination malignancy calculation method, and communication destination malignancy calculation program

摘要

A communication destination that is known to be malignant or benign is input to a known communication destination input unit (102), and a target communication destination that is a target for calculating malignancy is input to a target communication destination input unit (101). The feature extraction unit (103) uses the change over time of whether or not the destination and target communication destinations are posted on the malignant communication destination list and the benign communication destination list in the past at a predetermined time point as characteristic information of the known communication destination and the target communication destination. ) And the malignancy of the target communication destination is calculated by the malignancy calculation unit (104) based on the feature information of the known communication destination and the target communication destination.