Securing Fog Computing Networks: An Advanced Trust Management System Leveraging Fuzzy Techniques and Hierarchical Evaluation

This paper presents a Trust Management System (TMS) designed to counteract cyber-attacks in fog computing environments. The system integrates fuzzy AHP, hierarchical PROMETHEE methods, and fuzzy ranking to evaluate trust based on Quality of Service (QoS), Quality of Security (QoSec), and economic factors. Tested against Replay, On-Off, Bad-mouthing, and Ransomware attacks, the system demonstrates high detection accuracy, with error rates between 3.50% and 4.15%. The results show that the proposed TMS effectively enhances security and trust evaluation in fog computing networks.