LAUSR

Dear editor, Computer virus has become a major factor that poses a severe threat to contemporary information systems [1]. Some common models, e.g., threshold models, compartment-based models, and nodebased models have been employed to investigate the propagation mechanism of computer viruses. In particular, node-based models have been recently attracting great attention because many real-world networks have been shown to have a highly structured property [2]. Mieghem et al. [3] proposed the first node-based model to investigate the impact of network structure on the virus propagation process. As far as we know, some researchers have made some achievements in studying the incubation period of computer viruses [4,5]. However, most existing studies have assumed that nodes in the incubation period are not contagious, which is not true in many real-world cases [6]. To the best of our knowledge, no existing result considers the computer virus spread with incubation period using a node-based approach.