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Erschienen in:
2015 | OriginalPaper | Buchkapitel
Attack Trees with Sequential Conjunction
verfasst von : Ravi Jhawar, Barbara Kordy, Sjouke Mauw, Saša Radomirović, Rolando Trujillo-Rasua
Erschienen in: ICT Systems Security and Privacy Protection
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We provide the first formal foundation of
SAND
attack trees which are a popular extension of the well-known attack trees. The
SAND
attack tree formalism increases the expressivity of attack trees by introducing the sequential conjunctive operator
$${\mathtt {SAND}}$$
. This operator enables the modeling of ordered events.
We give a semantics to
SAND
attack trees by interpreting them as sets of series-parallel graphs and propose a complete axiomatization of this semantics. We define normal forms for
SAND
attack trees and a term rewriting system which allows identification of semantically equivalent trees. Finally, we formalize how to quantitatively analyze
SAND
attack trees using attributes.