TY  - JOUR
PY  - 2013//
TI  - Assessing n-order dependencies between critical infrastructures
JO  - International journal of critical infrastructures
A1  - Kotzanikolaou, Panayiotis
A1  - Theoharidou, Marianthi
A1  - Gritzalis, Dimitris
SP  - 93
EP  - 93
VL  - 9
IS  - 1/2
N2  - The protection of critical infrastructures (CI) is a complex task, since it involves the assessment of both internal and external security risk. In the recent literature, methodologies have been proposed that can be used to identify organisation-wise security threats, or even first-order dependency risk (i.e., risk deriving from direct dependencies). However, there is a lack of work in the area of multi-order dependencies, i.e., assessing the cumulative effects of a single incident, on infrastructures that are connected indirectly. In this paper, we propose a method to identify and assess multi-order dependencies. Based on previous work, we utilise existing first-order dependency graphs, in order to assess the effect of a disruption to consequent infrastructures. In this way, it may be possible to identify and prevent security threats of very high impact from a macroscopic view, which would be hard to identify if we only examine first-order dependencies. We also present a scenario, which provides some evidence on the applicability of the proposed approach.     KEYWORDS: critical infrastructure protection; risk assessment; criticality; multi-order dependencies; critical infrastructures; security risks; dependency graphs; security threats.<p />
LA  - en
SN  - 1475-3219
UR  - http://dx.doi.org/10.1504/IJCIS.2013.051606
ID  - ref1
ER  -