Analyzing Critical Infrastructure Dependencies: Security and Survivability Effects in the Service Sector

关于基础设施安全性和生存性的讨论需要系统范围的比较和跨学科的方法。我们对生存能力的考虑侧重于对商务部定义的主要基础设施部门的攻击或漏洞的大规模经济影响。我们探索核心服务基础设施部门（例如，电信，电力和管道）之间的关键联系，使用最初用于估计美国生产的环境和能源影响的总供应链分析模型。我们建议使用来自商务部经济分析局的公开数据来显示关键基础设施与服务经济之间的实际经济依赖关系。美国经济的投入产出表详细说明了所有500个国内经济部门之间产生的经济购买。具体来说，这些表格显示了每个部门产生的产出，以及其他部门从每个部门购买的产品数量。例如，该模型不仅可以显示哪些部门使用电力，还可以显示该部门用于生产商品或服务的电力的美元价值。这些数据是真实和有形的，反映了服务业企业对基础设施部门和整体经济中其他企业的依赖程度。当然，在讨论漏洞时，我们最感兴趣的部门是涉及关键基础设施的部门，如信息部门。这类分析可以导致投资资源分配的新方法，以确保基础设施的能力。为此，我们将通过提供一种量化评估工具，显示经济中存在的潜在联系和故障点，为针对有针对性的基础设施攻击所带来的潜在威胁和风险的全国对话做出贡献。

Discussions about infrastructure security and survivability require system-wide comparisons and interdisciplinary approaches. Our consideration of survivability focuses on large-scale economic implications of attacks or vulnerabilities on major infrastructure sectors as defined by the Department of Commerce. We explore the critical connections between core service infrastructure sectors (e.g., telecommunications, electricity, and pipelines) using a total supply chain analysis model originally developed to estimate environmental and energy effects of production in the U.S.We propose to use publicly available data from the Department of Commerce's Bureau of Economic Analysis to show the actual economic dependencies between critical infrastructures and the service economy in general. The input-output tables of the U.S. economy detail the economic purchases that result between all 500 domestic economic sectors. Specifically, these tables show how much output is generated by each of the sectors, and the amounts of product other sectors purchase from each sector. For example, the model can show not only which sectors use electricity but also how much dollar value of electricity is used to produce goods or services in that sector. These data are real and tangible representations of how dependent service sector businesses are to other businesses within the infrastructure sector and the economy in general.Of course, the sectors of most interest to us when discussing vulnerabilities are sectors involved with critical infrastructure such as the information sector. Analysis of this kind can lead to new approaches to resource allocation for investments to assure infrastructure capabilities. To this end, we will contribute to the national dialogue on pending threats and risks as a result of targeted infrastructure attacks by providing a quantitative assessment tool that shows the potential connection and failure points present in the economy.