Decentralized Semantic Threat Graphs

Abstract : Threat knowledge-bases such as those maintained by MITRE and NIST provide a basis with which to mitigate known threats to an enterprise. These centralised knowledge-bases assume a global and uniform level of trust for all threat and countermeasure knowledge. However, in practice these knowledge-bases are composed of threats and countermeasures that originate from a number of threat providers, for example Bugtraq. As a consequence, threat knowledge consumers may only wish to trust knowledge about threats and countermeasures that have been provided by a particular provider or set of providers. In this paper, a trust management approach is taken with respect to threat knowledge-bases. This provides a basis with which to decentralize and delegate trust for knowledge about threats and their mitigation to one or more providers. Threat knowledge-bases are encoded as Semantic Threat Graphs. An ontology-based delegation scheme is proposed to manage trust across a model of distributed Semantic Threat Graph knowledge-bases.
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Nora Cuppens-Boulahia; Frédéric Cuppens; Joaquin Garcia-Alfaro. 26th Conference on Data and Applications Security and Privacy (DBSec), Jul 2012, Paris, France. Springer, Lecture Notes in Computer Science, LNCS-7371, pp.177-192, 2012, Data and Applications Security and Privacy XXVI. 〈10.1007/978-3-642-31540-4_14〉
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Simon Foley, William Fitzgerald. Decentralized Semantic Threat Graphs. Nora Cuppens-Boulahia; Frédéric Cuppens; Joaquin Garcia-Alfaro. 26th Conference on Data and Applications Security and Privacy (DBSec), Jul 2012, Paris, France. Springer, Lecture Notes in Computer Science, LNCS-7371, pp.177-192, 2012, Data and Applications Security and Privacy XXVI. 〈10.1007/978-3-642-31540-4_14〉. 〈hal-01534768〉

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