关键词: 赛博空间, 安全风险管理, 体系结构

Abstract: This paper, after researching the security requirements of Cyberspace, through security engine and mobile security middleware technology, to solve the problem of the heterogeneity and security of the mobile terminal, puts forward a security architecture in abstract level of Cyberspace and gives out the technical description. The system combines the technique of risk management, and integrates variety of security technology and security levels, realizes the effective protection of Cyberspace environment. At the same time, it puts forward an information security risk assessment method based on hidden markov models. Computer simulation experiment results show that to realize the quantitative evaluation of Cyberspace security risk, the method has certain feasibility.

Key words: Cyberspace, security risk assessment, architecture