A risk assessment approach based on fuzzy 3D risk matrix for network device

Abstract

The reliability and security of network device is fundamental to network security. Thus risk management of network device is significant. As the crucial process of risk management, risk assessment has attracted major attention of researchers. This paper proposed a novel approach based on fuzzy 3D risk matrix for risk assessment of network device. Typical 2D risk matrix is widely adopted to assess and rank risk with likelihood and consequence, which is not reasonable with only two attributes of risk in practice. An attribute named risk controlling difficulty is added to establish a fuzzy 3D risk matrix, with triangular intuitionistic fuzzy number (TIFN) being used to evaluate it. What's more, fuzzy rules (FR) is used to rank the risk synthesizing the three attributes. The experiment demonstrates the implementation process of the proposed method which is proved to be effective and practical.