Designing a trade-off between usability and security: a metrics based-model

  • Authors:
  • Christina Braz;Ahmed Seffah;David M'Raihi

  • Affiliations:
  • Department of Computer Science, University of Quebec at Montreal, Montreal, QC, Canada;Department of Computer Science and Software Engineering, Concordia University, Montreal, QC, Canada;VeriSign Inc., Mountain View, CA

  • Venue:
  • INTERACT'07 Proceedings of the 11th IFIP TC 13 international conference on Human-computer interaction - Volume Part II
  • Year:
  • 2007

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Abstract

The design of usable yet secure systems raises crucial questions when it comes to balancing properly security and usability. Finding the right tradeoff between these two quality attributes is not an easy endeavor. In this paper, we introduce an original design model based on a novel usability inspection method. This new method, named Security Usability Symmetry (SUS), exploits automata machines theory and introduces the concept of an advanced Multifunction Teller Machine (MTM). We demonstrate, via case study, how to use this model during the design of secure, usable interactive systems.