Information security in communication network of memory channel considering information importance

摘要

The authors of this paper have described the structure of a communication network between people, using Shannon entropy, and developed it from a memoryless channel model to a memory channel model in recent years. They have also described the internal sharing of corporate information and information security using a memory channel model. However, organizations have information of both high and low importance, which is an aspect that previous models were unable to describe, creating a discrepancy between the proposed model and reality. This study addresses this problem by incorporating the importance of information in the model, and quantitatively analyzes how different types of communication network structures and information security measures influence the information sharing policies of organizations. In this study, the model gives important suggestions for information security measures within the organization.