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Misrepresentation mail detection apparatus and a cyber attack detection system, and a computer program and misrepresentation mail detection method
Misrepresentation mail detection apparatus and a cyber attack detection system, and a computer program and misrepresentation mail detection method
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机译：虚假邮件检测设备和网络攻击检测系统以及计算机程序和虚假邮件检测方法
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摘要
PROBLEM TO BE SOLVED: To determine whether or not a determined mail is possibly a spoofing mail, based on the communication direction each of one or more packet when the determined mail is communicated.;SOLUTION: A continuous degree calculation unit 261 determines the transmission direction of each of a series of packets constituting a session in accordance with the transfer of an E-mail, and calculates the ratio of packets, the transmission direction of which is same as that of a previous packet, as a packet continuous degree. A statistic calculation unit 262 calculates the statistic based on the packet continuous degree for one or more E-mails having an author domain same as that of the determined mail. A spoofing determination unit 28 determines whether the determined mail is possibly a spoofing mail, based on the statistic.;COPYRIGHT: (C)2014,JPO&INPIT
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