0引言计算机技术以及网络技术的高速发展,使得计算机及其网络应用深入到政治、经济、文化和社会生活等各个领域,但是在它发展的同时也带来了诸多的网络安全问题,因此,各类的网络安全防御和控制技术随之应运而生。作为一种主动的防御技术,网络安全的风险评估能够于安全事件正在发生时及时分析与评估 0 Introduction Computer technology and the rapid development of network technology have made computers and their applications in various fields, such as politics, economy, culture and social life, brought a great deal of cybersecurity problems along with their development. Therefore, each Class of network security and control technology came into being. As a proactive defense technology, the risk assessment of cybersecurity can be timely analyzed and evaluated as security incidents are taking place