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

摘要

Communication partners known to be malignant or benign are input to a known communication partner input unit (102), a subject communication partner whose malignancy is to be calculated is input to a subject communication partner input unit (101), a characteristic extractor (103) extracts changes over time in whether the known communication partners and the subject communication partner are listed at a past given time point on a malignancy communication partner list and a benign communication partner list, and a malignancy calculator (104) calculates malignancy of the subject communication partner on the basis of the characteristic information about the known communication partners and the subject communication partner.