An Analysis of Sensitive Information System Security Models

The study of security models for sensitive information systems has been taken on for years. During this century, the thought of seeking the system security to the source of system development lifecycle received huge improvement in the system and software assurance domain. This paper expounds the understanding of information security by illustrating information security study development progress since pre-computer age and presents a description of cyberspace and cyberization security by summarizing the status quo of cyberization. Then a security model called PDRL, which includes six core security attributes of sensitive information systems, is proposed to protect the security of sensitive information systems in the whole system life-cycle.