| 摘要 |
PROBLEM TO BE SOLVED: To detect possibility that a secret has leaked to a person who is not supposed to know the secret.SOLUTION: When a search keyword is stored as a secret keyword in a secrete keyword storage part (12), a special search part (16a) acquires document ID stored in the secret keyword storage part (12) in association with the search keyword as a search result. Also, when the search keyword is stored in the search keyword storage part (12), an authority presence/absence determination part (18a) determines whether or not a search execution user has the browsing authority of a document shown by the document ID in the search result. When the search execution user has the browsing authority of the document shown by the document ID in the search result, a notification part (20a) transmits warning electronic mail. |
