Elaborating Security Requirements by Construction of Intentional Anti-Models (2004)
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BibTeX
@MISC{Lamsweerde04elaboratingsecurity,
author = {Axel Van Lamsweerde},
title = {Elaborating Security Requirements by Construction of Intentional Anti-Models},
year = {2004}
}
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Abstract
Caring for security at requirements engineering time is a message that has finally received some attention recently. However, it is not yet very clear how to achieve this systematically through the various stages of the requirements engineering process. The paper presents a constructive approach to the modeling, specification and analysis of applicationspecific security requirements. The method is based on a goal-oriented framework for generating and resolving obstacles to goal satisfaction. The extended framework addresses malicious obstacles (called anti-goals) set up by attackers to threaten security goals. Threat trees are built systematically through anti-goal refinement until leaf nodes are derived that are either software vulnerabilities observable by the attacker or anti-requirements implementable by this attacker. New security requirements are then obtained as countermeasures by application of threat resolution operators to the specification of the antirequirements and vulnerabilities revealed by the analysis. The paper also introduces formal epistemic specification constructs and patterns that may be used to support a formal derivation and analysis process. The method is illustrated on a web-based banking system for which subtle attacks have been reported recently.
