Modelling Attack-defense Trees Using Timed Automata

Abstract : Performing a thorough security risk assessment of an organisation has always been challenging, but with the increased reliance on outsourced and off-site third-party services, i.e., " cloud services " , combined with internal (legacy) IT-infrastructure and-services, it has become a very difficult and time-consuming task. One of the traditional tools available to ease the burden of performing a security risk assessment and structure security analyses in general is attack trees [19, 23, 24], a tree-based formalism inspired by fault trees, a well-known formalism used in safety engineering. In this paper we study an extension of traditional attack trees, called attack-defense trees, in which not only the attacker's actions are modelled, but also the defensive actions taken by the attacked party [15]. In this work we use the attack-defense tree as a goal an attacker wants to achieve, and separate the behaviour of the attacker and defender from the attack-defense-tree. We give a fully stochastic timed semantics for the behaviour of the attacker by introducing attacker profiles that choose actions probabilistically and execute these according to a probability density. Lastly, the stochastic semantics provides success probabilitites for individual actions. Furthermore, we show how to introduce costs of attacker actions. Finally, we show how to automatically encode it all with a network of timed automata, an encoding that enables us to apply state-of-the-art model checking tools and techniques to perform fully automated quantitative and qualitative analyses of the modelled system.
Type de document :
Communication dans un congrès
FORMATS 2016 -14th International Conference on Formal Modelling and Analysis of Timed Systems, Aug 2016, Quebec City, Canada. pp.35 - 50, 2016, 〈10.1007/978-3-319-44878-7_3〉
Liste complète des métadonnées

Littérature citée [22 références]  Voir  Masquer  Télécharger

https://hal.inria.fr/hal-01406706
Contributeur : Nisrine Jafri <>
Soumis le : mercredi 7 décembre 2016 - 14:16:36
Dernière modification le : mercredi 16 mai 2018 - 11:24:11
Document(s) archivé(s) le : lundi 20 mars 2017 - 22:06:33

Fichier

formats2016.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

Olga Gadyatskaya, René Rydhof Hansen, Kim Guldstrand Larsen, Axel Legay, Mads Olesen, et al.. Modelling Attack-defense Trees Using Timed Automata. FORMATS 2016 -14th International Conference on Formal Modelling and Analysis of Timed Systems, Aug 2016, Quebec City, Canada. pp.35 - 50, 2016, 〈10.1007/978-3-319-44878-7_3〉. 〈hal-01406706〉

Partager

Métriques

Consultations de la notice

695

Téléchargements de fichiers

289