| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a countermeasure system against virus inflection and confidential information leakage for safely opening a file in which virus may be included without increasing the number of mail clients. <P>SOLUTION: A mail gateway 16 encrypts a part of an attached file in which virus is highly possibly included and attaches a signature thereto among e-mails to receive via a LAN 13. In displaying the attached file, mail clients transmit the file to a file gateway 17, and the file gateway 17 transfers the file to a general-purpose virtual machine 14 after the file gateway 17 confirms the signature. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
