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SPOOFING MAIL DETECTOR AND CYBER ATTACK DETECTION SYSTEM AND COMPUTER PROGRAM AND SPOOFING MAIL DETECTION METHOD
SPOOFING MAIL DETECTOR AND CYBER ATTACK DETECTION SYSTEM AND COMPUTER PROGRAM AND SPOOFING MAIL DETECTION METHOD
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机译:冒号检测器和网络攻击检测系统及计算机程序和冒号检测方法
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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 whether or not the determined mail is a via foreign mail.;SOLUTION: When a country to which an E-mail author domain belongs is same as a destination country to which a destination domain of the E-mail belongs, a via foreign mail determination unit 251 determines whether or not the E-mail is sent via a country different from the destination country. A domestic trust domain learning unit 252 counts the number of via foreign mails sent via a country different from the destination country, out of one or more E-mails where the author domain is same as the determined mail. When the determined mail is sent via a country different from the destination country, and the number of via foreign mails is smaller than a predetermined via foreign threshold, a spoofing determination unit 28 determines that the determined mail is possibly a spoofing mail where the author is spoofed.;COPYRIGHT: (C)2014,JPO&INPIT
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