| 摘要 |
PROBLEM TO BE SOLVED: To permit transmission of important information to a legitimate site and block transmission to a phishing site, without imposing a burden on an end user.SOLUTION: When a request from a client terminal 100 does not correspond to a white list and a black list, a network device 400 checks if a response from a server 600 is requesting the client terminal 100 to transmit data, and if the data transmission is requested the network device 400 blocks the request when requested information is included in the request transmitted from the client terminal 100. Or, the network device 400 blocks the request when the information which is not desired to be leaked is preliminarily included in the request transmitted from the client terminal 100. |
