This paper fused the characteristics of cloud security and the point-to-group networks, proposed a new malware propagation model based on cloud-edge combination, namely, cloud security environment and point-to-group information sharing networks, and formed the cloud-edge combination defense against malicious code. Firstly, this paper introduced cloud security node based on the classical susceptibility-infection-immune propagation model, and added additional immune pathways of nodes in cloud security environment. Secondly, this paper analyzed the dynamics of the new model, and calculated the equilibrium point and propagation threshold of the model, and proved the local stability and global stability of the equilibrium point. Finally, the results of numerical simulation and simulation experiments show that, the malware propagation model based on cloud-edge joint defense can better curb the spread of malware in the network, and with the improvement of node detection and feedback ability, the containment effect of malware will be better.

[2023-01-05] Accepted Paper /doc/2022.11.0523/v1

[2023-06-05] Printed Article /doc/2022.11.0523/v2