【摘要】 用有向图描述了电子邮件网络的结构,并分析了电子邮件网络的无尺度特性。在此基础上,通过用户检查邮件的频率和打开邮件附件的概率建立了一种电子邮件蠕虫的传播模型。分别仿真了电子邮件蠕虫在无尺度网络和随机网络中的传播,结果表明,邮件蠕虫在无尺度网络中的传播速度比在随机网络中更快,与理论分析相一致。更多还原

【Abstract】 A propagation model of spam worms in scale-free networks is presented and the directed graph is used to describe the e-mail networks.This model can explain the behaviors of email users by the frequency of their checking emails and the probability of their opening email attachments.The simulation results show that spam worms spread more quickly in a scale-free network than in a random network,which is much more important for the study of the defense strategies against spam worms.更多还原