Time dependent analysis with dynamic counter measure trees

TitleTime dependent analysis with dynamic counter measure trees
Publication TypeConference Paper
Year of Publication2015
AuthorsKumar R., Guck D., Stoelinga M.IA
Conference NameProceedings of the 13th Workshop on Quantitative Aspects of Programming Languages and Systems (QAPL 2015), London, England
Date PublishedApril
Conference LocationFrance
Keywordsattack trees, counter measure trees, time dependent analysis

The success of a security attack crucially depends on time: the more time available to the attacker, the higher the probability of a successful attack. Formalisms such as Reliability block diagrams, Reliability graphs and Attack Countermeasure trees provide quantitative information about attack scenarios, but they are provably insufficient to model dependent actions which involve costs, skills, and time. In this presentation, we extend the Attack Countermeasure trees with a notion of time; inspired by the fact that there is a strong correlation between the amount of resources in which the attacker invests (in this case time) and probability that an attacker succeeds. This allows for an effective selection of countermeasures and rank them according to their resource consumption in terms of costs/skills of installing them and effectiveness in preventing an attack.