网络安全投资决策支持方法比较
Comparing Decision Support Approaches for Cyber Security Investment
摘要：
在投资网络安全资源时，信息安全管理人员必须遵循有效的决策策略。我们称之为网络安全投资挑战。在本文中，我们考虑了三种可能的决策支持方法，为安全管理人员应对这一挑战。我们认为基于博弈论，组合优化和两者的混合的方法。我们的建模首先是建立一个框架，在这个框架中，我们可以调查网络安全控制在保护被视为商品威胁目标的不同资产方面的有效性。在博弈论方面，我们考虑了两人之间的控制游戏的安全管理人员谁必须选择不同的实施水平的网络安全控制，和商品攻击者谁选择不同的目标进行攻击。纯博弈论方法论是一个包含所有控制和所有威胁的大型博弈。在混合方法中，将各个控制博弈的博弈解及其直接成本（例如财务成本）与背包算法相结合，以获得最佳投资策略。组合优化技术包括一个多目标多选择背包为基础的战略。我们比较这些方法的案例研究，是建立在SANS的顶部关键控制。这项工作的主要成就是突出了网络安全不同投资方法的弱点和优势，它们相互作用的好处，以及间接成本对网络安全投资的影响。
英文摘要：
When investing in cyber security resources, information security managers have to follow effective decision-making strategies. We refer to this as the cyber security investment challenge. In this paper, we consider three possible decision-support methodologies for security managers to tackle this challenge. We consider methods based on game theory, combinatorial optimisation and a hybrid of the two. Our modelling starts by building a framework where we can investigate the effectiveness of a cyber security control regarding the protection of different assets seen as targets in presence of commodity threats. In terms of game theory we consider a 2-person control game between the security manager who has to choose among different implementation levels of a cyber security control, and a commodity attacker who chooses among different targets to attack. The pure game theoretical methodology consists of a large game including all controls and all threats. In the hybrid methodology the game solutions of individual control-games along with their direct costs (e.g. financial) are combined with a knapsack algorithm to derive an optimal investment strategy. The combinatorial optimisation technique consists of a multi-objective multiple choice knapsack based strategy. We compare these approaches on a case study that was built on SANS top critical controls. The main achievements of this work is to highlight the weaknesses and strengths of different investment methodologies for cyber security, the benefit of their interaction, and the impact that indirect costs have on cyber security investment.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
