Journal of Information Security Research Yonghui Ma 16 1 2025 https://doi.org/10.6025/jisr/2025/16/1/9-16 https://www.dline.info/jisr/fulltext/v16n1/jisrv16n1_2.pdf In this study, we employed a novel technique, 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.