A Spam Worm Propagation Model in Scale-free Networks
一种无尺度网络上垃圾邮件蠕虫的传播模型

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.