Abstract: In recent years, computing system vulnerability analysis attracts more and more researchers, which has become a hot spot in the field of system security. With the emergence of multi-core technology, computing systems become more open and dynamic. An attack graph-based dynamic security analysis model was proposed, which can measure combined effect of dynamic computing system vulnerabilities. An improved attack map generation algorithm was also presented to improve performance and simplify further security analysis by system administrators. Moreover,a virtual computing system-based example shows the analysis process of the proposed method and validates its efficiency and performance. hhe experimental results show that our method is an effective way to dynamic system security risk analysis.

Key words: System security, Security analysis, Attack graph, Dynamic baysian network