文献类型：期刊文献

英文题名：HSIRD: A model for characterizing dynamics of malware diffusion in heterogeneous WSNs

作者：Shen, Shigen[1];Zhou, Haiping[1];Feng, Sheng[1];Huang, Longjun[1];Liu, Jianhua[1];Yu, Shui[2];Cao, Qiying[3]

机构：[1]Shaoxing Univ, Dept Comp Sci & Engn, Shaoxing, Zhejiang, Peoples R China;[2]UTS, Sch Software, Sydney, NSW, Australia;[3]Donghua Univ, Coll Comp Sci & Technol, Shanghai, Peoples R China

年份：2019

卷号：146

外文期刊名：JOURNAL OF NETWORK AND COMPUTER APPLICATIONS

收录：SCI-EXPANDED(收录号：WOS:000494889500009)、、EI(收录号：20193407327929)、Scopus(收录号：2-s2.0-85070694696)、WOS

基金：This work was supported by National Natural Science Foundation of China under Grants nos. 61772018, 61572014, and 61728201, and by Public Welfare Technology Research Project of Zhejiang Province under Grant no. LGG19F020007.

语种：英文

外文关键词：Heterogeneous WSNs; Malware; Epidemiology; Equilibrium points; Stability

外文摘要：Heterogeneous wireless sensor networks (HWSNs), as blocks of the Internet of Things, are vulnerable to malware diffusion breaking the data confidentiality and service availability, owing to their weak defense mechanism and poor resilience. Thus, constructing a malware diffusion model and revealing the rules of malware diffusion in HWSNs are urgently needed. In this context, we propose a Heterogeneous Susceptible-Infectious-Removed-Dead (HSIRD) model based on epidemiology, in order to not only characterize the dead state where a heterogeneous sensor node (HSN) may lose its functionality owing to physical damage or malware attacks but also represent the HSN communication connectivity, which is one of the heterogeneities that exist universally in HWSNs. We then analyze the dynamics of the fractions of HSNs belonging to different degrees in different states and obtain the corresponding differential equations. Using these equations, we prove the existence of equilibrium points of the HSIRD model. Subsequently, we attain the basic reproduction number governing the stability of the equilibrium points. We further prove the stability of the equilibrium points of the model and attain the conditions indicating whether malware in HWSNs will diffuse or die out. Finally, we validate the effectiveness of the model via simulation. The results provide a theoretical foundation for suppressing malware diffusion in malware-infected HWSNs.