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Publication Detail
Modelling and simulating systems security policy
  • Publication Type:
  • Authors:
    Caulfield T, Pym D
  • Publication date:
  • Pagination:
    24, 33
  • Published proceedings:
    8th International ICST Conference on Simulation Tools and Techniques, SIMUTOOLS 2015
  • ISBN-13:
  • Status:
© 2015 European Alliance for Innovation. All rights reserved. Security managers face the challenge of designing security policies that deliver the objectives required by their organizations. We explain how a rigorous modelling framework and methodology—grounded in semantically justified mathematical systems modelling, the economics of decision-making, and simulation—can be used to explore the operational consequences of their design choices and help security managers to make better decisions. The methodology is based on constructing executable system models that illustrate the effects of different policy choices. Models are compositional, allowing complex systems to be expressed as combinations of smaller, complete models. They capture the logical and physical structure of systems, the choices and behaviour of agents within the system, and the security managers' preferences about outcomes. Utility theory is used to describe the extent to which security managers" policies deliver their security objectives. Models are parametrized based on data obtained from observations of real-world systems that correspond closely to the examples described.
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