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Quantification, Optimization and Uncertainty Modeling in Information Security Risks: A Matrix-Based Approach

Author

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  • Sanjay Goel

    (University at Albany, SUNY, USA)

  • Eitel J.M. Lauría

    (Marist College, USA)

Abstract

In this paper, the authors present a quantitative model for estimating security risk exposure for a firm. The model includes a formulation for the optimization of controls as well as determining sensitivity of the exposure of assets to different threats. The model uses a series of matrices to organize the data as groups of assets, vulnerabilities, threats, and controls. The matrices are then linked such that data is aggregated in each matrix and cascaded across the other matrices. The computations are reversible and transparent allowing analysts to answer what-if questions on the data. The exposure formulation is based on the Annualized Loss Expectancy (ALE) model, and uncertainties in the data are captured via Monte Carlo simulation. A mock case study based on a government agency is used to illustrate this methodology.

Suggested Citation

  • Sanjay Goel & Eitel J.M. Lauría, 2010. "Quantification, Optimization and Uncertainty Modeling in Information Security Risks: A Matrix-Based Approach," Information Resources Management Journal (IRMJ), IGI Global, vol. 23(2), pages 33-52, April.
    • Handle: RePEc:igg:rmj000:v:23:y:2010:i:2:p:33-52
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    Cited by:

    1. Pedro Sá Silva & Jorge Pinto & João Varajão & António Trigo & Isabel Bentes & Humberto Varum, 2012. "Potential Use of the Theory of Vulnerability in Information Systems," Information Resources Management Journal (IRMJ), IGI Global, vol. 25(2), pages 22-33, April.

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