邮件蠕虫传播与防御行为模型与分析

Model and Analysis Based on Propagation and Defensive Behavior of Email Worm

邮件蠕虫的传播问题是当前网络安全研究的一个重要方面,也是探索邮件蠕虫防御策略的必要环节。引进随机博弈网对邮件蠕虫的传播行为进行支持量化计算的可扩展图形化方法建模,并基于该模型提出了求解模型均衡策略的算法。依据该算法进一步提出了蠕虫扩散性行为分析指标的量化计算方法,并进行了对比分析,讨论了在不同传播策略下感染率和平均感染时间的变化。最后探讨了各种防御策略对邮件蠕虫传播产生的影响。

Email worm propagation is a significant aspect of network security research nowadays, and also is essential to explore defensive strategies of email worm. A graphical modeling description method （Stochastic Game Nets） that supported quantitative mathematical calculation was introduced, and according to the practical model, an algorithm was proposed for solving the equilibrium strategy. Then the quantitative calculation method of worm propagation behavior analysis indicators were.further proposed based on the algorithm, taking a comparative analysis, and also the variety of the infection rate and the average infection time were discussed with different strategies. Finally, a variety of defensive strategies on the impact of email worm propagation was discussed.