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Information Security Risks Propagation and Management in Supply Chain: An Analytical Approach



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Journal of Information Systems Security
Volume 15, Number 1 (2019)
Pages 325
ISSN 1551-0123 (Print)
ISSN 1551-0808 (Online)
Bin Mai — Texas A&M University, USA
Jianguo Liu — University of North Texas, USA
Information Institute Publishing, Washington DC, USA




Supply chain risk management has been a focal point of interests for supply chain researchers as well as practitioners recently. Information security risk has been identified as a significant risk factor. Yet current research to investigate the impacts and management of information security risks in supply chain remains lacking. In this paper, we develop an innovative analytical model of a general multi-tier supply chain with multiple information assets facing multiple information security threats, which may propagate from one node to another if unmitigated. In analyzing our model, we show that our model formulation can guarantee the existence of an optimal strategy of information security investment, and the optimal strategy can be derived by standard optimization approaches. Our analyses also indicate the direct and significant impacts of information security threat propagation on the information security investment strategy. In addition, we also discuss the practical significance and managerial implications of our model and analyses to the supply chain management practitioners.




Supply Chain Risk Management, Information Security Risk Propagation, Information Security Investment, Optimal Strategy, Constrained Optimization




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