Abstract: In order to improve the security of bank network system, the tripartite network game model is presented which includes hackers, administrators and bank decisionmakers. Some basis are provided for strategy selecting of administrators and decisionmakers by analyzing the behaviors and interrelations between the three sides in the model. The sub-game model is adopted and analyzed to acquire the perfect Bayesian Nash equilibrium according to the characteristics of the tripartite model, and it makes the system administrator and the policy-making levels achieve the best strategy selection.

Key words: tripartite game model, bank network, A-D sub-game model, perfect Bayesian Nash equilibrium

摘要： 为提高银行网络系统的安全性，提出关于银行网络的三方博弈模型，其主体包括黑客、系统管理员和银行决策层。通过分析3个博弈方的行为及其之间的相互联系，为系统管理员和银行决策层的策略选择提供依据。根据该三方博弈模型的特点，将其划分成一个子博弈模型并对其进行分析，得出精炼贝叶斯纳什均衡，使系统管理员和银行决策层达到最优的策略选取。

关键词: 三方博弈模型, 银行网络, A-D子博弈模型, 精炼贝叶斯纳什均衡

CLC Number: 

• TP393.08