Worm Propagation Model for Heterogeneous Network

Recent threats caused by worms on mobile phones are recognized as one of the most serious security threats to heterogeneous networks. Some early work model assumes that worm propagation on mobile phone cannot infect Computer in the Internet, or vice versa. However, as the development of mobile phone and multiply approaches surfing online, such as 3G, Wi-Fi, itputs hybrid nodes (mobile phone and Computer) infecting each other into practice. In this paper, we study hybrid nodes infected each other by download files. Unlike worms spreading only in Internet or Mobile network, this hybrid worm (HY-worm) spread in the heterogeneous networks constituted by hybrid nodes will cause more serious damage. We present a novel analytical model to analyze the HY-worm spreading. Based on limited storage, computing, download speed and the lack of protect system of mobile phone, we find that the better the mobile phone is the more damage HY-worm will cause.