A document management system with supervised check

摘要

For a system working with a network, the security against the outsiders could be kept by user authentication and/or firewall. However, it is difficult to defend data from attacks by the insiders. The insiders are legal users of the system and permitted to access data of it. Therefore, if they are malicious or make a mistake, the data can be destroyed. This paper proposes a scheme to protect the data from the insiders.