提出了一个基于威胁评估和模拟攻击的安全风险评估模型，设计并实现了网络安全评估原型系统。
A risk assessment model based on threat assessment and simulation attack is proposed, and a kind of prototype system is designed and realized.
当前，最常用的网络安全评价方法是风险评估方法，以及利用漏洞扫描工具软件来测试和评估系统的安全程度等。
At present, the most frequently used network security evaluating methods are risk evaluating method and leak scanning tool software to test and evaluate the security degree of the system.
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