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Publication Detail
Systematic Decision Making in Security Management Modelling Password Usage and Support
  • Publication Type:
    Conference
  • Authors:
    Arnell S, Beautement A, Inglesant P, Monahan B, Pym D, Sasse MA
  • Publication date:
    09/2012
  • Place of publication:
    Pisa, Italy
  • Name of conference:
    Workshop on Quantitative Aspects in Security Assurance (QASA 2012)
  • Conference place:
    Pisa, Italy
  • Conference start date:
    14/09/2012
  • Conference finish date:
    14/09/2012
Abstract
We demonstrate the use of a systematic decision-making methodology to support an informed choice of a password policy. Our approach uses an executable system model, grounded in empirical data, to compare, using simulations, two different policy options. The problem is framed economically, with the basis of the comparison being a notion of organizational utility. We quantify utility in this case by considering breaches of system security, users productivity, and investment in support operations. Using our results, we are able to explore trade-offs between these factors and thus determine the optimal policy configuration given the initial conditions.
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Dept of Computer Science
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