To provide a data protection method which allows data to be protected even when there is any access beyond administrator's intention. The data protection method for accepting an access request for a file stored in a file system of a storage device and referring or updating to the file based on the access...http://www.google.de/patents/US7308450?utm_source=gb-gplus-sharePatent US7308450 - Data protection method, authentication method, and program therefor
