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基于Gordon-Loeb模型的信息安全投资博弈研究
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作者 王秦 朱建明 《通信学报》 EI CSCD 北大核心 2018年第2期174-182,共9页
为了研究信息安全投资外部性的影响,将Gordon-Loeb模型扩展到多组织博弈环境下,分别得出在正负外部性下,面对不同类型的攻击时,最优信息安全投资与脆弱性、潜在损失和投资效率的关系,并且比较了与社会最优条件下最优信息安全投资的差别... 为了研究信息安全投资外部性的影响,将Gordon-Loeb模型扩展到多组织博弈环境下,分别得出在正负外部性下,面对不同类型的攻击时,最优信息安全投资与脆弱性、潜在损失和投资效率的关系,并且比较了与社会最优条件下最优信息安全投资的差别。结果表明,正外部性条件下的信息安全投资变化规律与单一组织的情况相比存在一定相似之处,但负外部性下的信息安全投资改变较大,总体更加谨慎,并且攻击类型对于信息安全投资有着重要影响。 展开更多
关键词 信息安全投资 gordon-loeb模型 外部性 攻击类型
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Empirical Investigation of Threats to Loyalty Programs by Using Models Inspired by the Gordon-Loeb Formulation of Security Investment
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作者 Shiori Shinoda Kanta Matsuura 《Journal of Information Security》 2016年第2期29-48,共20页
Loyalty program (LP) is a popular marketing activity of enterprises. As a result of firms’ effort to increase customers’ loyalty, point exchange or redemption services are now available worldwide. These services att... Loyalty program (LP) is a popular marketing activity of enterprises. As a result of firms’ effort to increase customers’ loyalty, point exchange or redemption services are now available worldwide. These services attract not only customers but also attackers. In pioneering research, which first focused on this LP security problem, an empirical analysis based on Japanese data is shown to see the effects of LP-point liquidity on damages caused by security incidents. We revisit the empirical models in which the choice of variables is inspired by the Gordon-Loeb formulation of security investment: damage, investment, vulnerability, and threat. The liquidity of LP points corresponds to the threat in the formulation and plays an important role in the empirical study because it particularly captures the feature of LP networks. However, the actual proxy used in the former study is artificial. In this paper, we reconsider the liquidity definition based on a further observation of LP security incidents. By using newly defined proxies corresponding to the threat as well as other refined proxies, we test hypotheses to derive more implications that help LP operators to manage partnerships;the implications are consistent with recent changes in the LP network. Thus we can see the impacts of security investment models include a wider range of empirical studies. 展开更多
关键词 Loyalty Program Security Investment gordon-loeb Model LIQUIDITY Information Security Economics
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