当前，大数据给企业带来了重大发展机遇，但也带来了更加严峻的信息安全风险。本项目拟针对大数据环境下企业面临的信息安全问题，构建企业的信息安全技术投资与保险投资博弈模型，对大数据环境下的企业信息安全投资策略进行深入研究。首先，拟从无线传输与智能终端、大数据存储与传输、大数据分析三个方面对大数据环境下的信息安全新特性进行分析；接着，对基于大数据分析的黑客攻击策略与企业防御策略进行研究，预测不同类型攻击的概率和危害程度，构建黑客与企业之间的攻防博弈模型，分析纳什均衡下的黑客攻击投入与企业投资策略；最后，针对合作企业之间在信息安全投资中的“搭便车”行为，构建不同企业之间的信息安全投资博弈模型，对企业的纳什均衡策略与最优策略进行对比分析，并建立企业间的协同机制以保证企业进行最优决策。此外，本项目将以社交网络为背景进行案例研究，验证以上的理论研究并发现和提炼新的科学问题。

Nowadays, although big data brings great opportunities for firms’ development, it also introduces severer information security risk. This project plans to construct the game model of information security technology investment and insurance investment for firms facing information security issues in the environment of big data. The information security investment strategy of firms in the environment of big data will be investigated intensively. First, the new characteristics of information security in the environment of big data will be analyzed from the aspects of wireless transmission and intelligent terminal, storage and transmission of big data, and big data analysis. Second, this project will study hacker’s attack strategy and firm’s defense strategy based on big data analysis. The probability and damage extent of different attacks will be predicted. The attack-defense game model between hackers and firms will be built. Then hacker’s attack strategy and firm’s defense strategy in Nash equilibrium will be analyzed. Third, in order to eliminate the free-riding behavior in the decision-making process of information security investment between firms, the game model of information security technology investment and insurance investment between different firms will be built. A comparative analysis will be made on Nash equilibrium investment and optimal investment. Then some coordination mechanisms will be built to help firms make the optimal decision. In addition, this project will conduct a case study in the setting of social network to validate aforementioned theoretical research and extract some new scientific problems.