添付情報付き電子メールによる不正メールの検知方法，その検知プログラム及びその検知装置

摘要

A detecting method includes: receiving a text information mail including text information, first verification information on the text information, first verification information of attached information which is attached to the text information, and an attached information mail including the attached information, first verification information of the text information, and first verification information of the attached information from a transmission source; generating second verification information of the text information, and second verification information of the attached information, based on shared information which is shared with the transmission source, and an algorithm; and detecting a spoof, based on a comparison result of the first verification information of the text information and the second verification information of the text information, and a comparison result of the first verification information of the attached information and the second verification information of the attached information.