| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a vicious site detection device capable of improving the accuracy and the comprehensiveness of a vicious site.SOLUTION: The vicious site detection device has: a storage part for storing site access information which is a history in which an information terminal accesses web sites on a network and a known vicious site list which is a list carrying known vicious sites; a site access information collection part for extracting sites accessed within a prescribed time before and after the information terminal accesses a known vicious site from the site access information stored by the storage part, and making the extracted site a suspicious vicious site; a score calculation part for giving a score representing a vicious degree to the suspicious vicious site extracted by the site access information collection part; and a vicious list updating part for determining that the suspicious vicious site with the score given by the score calculation part exceeding a preset threshold is an unknown vicious site, and adding the unknown vicious site to the known vicious site list.</p> |
