Abstract:

Attack and defense are dialectical unity， and their mutual transformation is a direct embodiment of the combat process. In network attack and defense， the offense usually dominates while the defense is in a relatively weak position， and the idea of dynamic defense is valued. By combing and analyzing the dynamic defense of cyberspace， the factors affecting the defense capability of cyberspace are obtained， and a set of cyberspace defense index systems based on dynamic empowerment is constructed. To eliminate the interference of human preference on the results， the entropy weight method is adopted to simplify the index set， and the comprehensive weight of each index is weighted. The TOPSIS（technique for order preference by similarity to an ideal solution）-gray correlation analysis method is applied to construct an evaluation model to realize the evaluation of cyberspace defense capability， and the effectiveness and feasibility of the evaluation model are proved by specific cases.

Key words: cyber defense, performance evaluation, indicator system, entropy weight method, technique for order preference by similarity to an ideal solution（TOPSIS）, grey association analysis

摘要：

攻与守是辩证的统一，二者的相互转换是战斗过程的直观体现。网络攻防中，进攻通常占据主导地位，防御相对居于弱势位置，动态防御思想受到重视。通过梳理分析网络空间动态防御，得到影响网络空间防御能力的各个因素，构建了一套基于动态赋能的网络空间防御指标体系。为了排除由于人为偏好对结果的干扰，采用熵权法精简指标集合，对各项指标进行综合权重赋权，运用TOPSIS-灰色关联分析法构建了评估模型，实现了网络空间防御能力的评估，通过具体案例证明了该评估模型有效可行。

关键词: 网络防御, 效能评估, 指标体系, 熵权法, 优劣解距离法, 灰色关联分析法