信息安全风险评估是信息系统安全工程的重要组成部分，也是建立信息安全保障体系的基础。
Information security risk assessment is not only the most component of the information system security engineering, but also the basis to construct the information safety guarantee system.
本文利用系统工程的思想，通过把信息系统安全与系统工程环境相结合，确定了信息系统生命周期中各阶段的主要安全工程活动。
By applying the theory of system engineering, this paper identifies the primary security engineering activities in the life cycle of information systems.
本文利用系统工程的思想，通过把信息系统安全与系统工程环境相结合，确定了信息系统生命周期中各阶段的主要安全工程活动。
By applying the theory of system engineering, this paper identifies the primary security engineering activities in the life cycle of information systems.
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