网络蠕虫的演化

Evolution of Internet Worms

针对复杂生态环境中网络蠕虫对传播率的演化选择问题,给出了一个蠕虫传播模型.运用动力学分析方法得到了模型的平衡态及其稳定性条件,并进行了仿真验证.在理论分析的基础上,利用随机算法仿真了不同传播率对蠕虫传播的影响.仿真结果表明,复杂生态环境更有利于具有小传播率的蠕虫.对该类蠕虫,进一步仿真了防病毒技术对其影响.结果表明,加强杀毒系统对小传播率蠕虫的查杀能力和引入竞争性蠕虫能有效遏制该类蠕虫的传播.

To study the evolutionary selection of internet worms on the spreading rate under the complex ecological environment,a worms spreading model was presented.Firstly,the model’s equilibria and their stability conditions were obtained mathematically and then verified by simulations.Based on the analysis,a random algorithm was used to simulate the spreading of worms at different spreading rates.Simulation results show that the complex ecology favors the worms with low spreading rate.Then,the impacts of anti-worm methods on the worms with low spreading rate were studied.Results show that the worms can be contained by enhancing the detecting ability of anti-worm system or introducing other anti-worm worms