Journal of Digital Information Management Yonghui Ma 22 4 2024 https://10.6025/jdim/2024/22/4/137-142 https://www.dline.info/fpaper/jdim/v22i4/jdimv22i4_4.pdf In this study, we employed data mining to accurately evaluate the failure rate of secure computers, providing valuable data information for our decision-making layer. This technique is beneficial not only for our decision-making but also for the long-term operation of our systems. Through in-depth analysis, we discovered inherent connections among various failure events and their mutual impacts. These findings contribute to a deeper understanding of common cause failures in secure computer systems and prepare for enhancing their security. Establishing a robust information system is essential to meet the increasing demands, especially in the complex internet environment where secure digital computer systems face ever-growing challenges.