| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a malicious mail detecting technology detecting spam mail and malware even when a part of data included in a packet is intentionally modified. <P>SOLUTION: This malicious mail detector 50 has a storage means 170 storing the feature amount of a character string pattern included in mail to be compared; a computing means 120 computing the feature amount of the character string pattern within a computation range defined beforehand out of received mail; and determining means 130, 140 determining whether the mail is malicious mail from the similarity between the feature amount of the character string pattern of the received mail computed by the computing means and the feature amount of the stored character string pattern. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
