Risk Modeling and Analysis of Interdependencies of Critical Infrastructures Using Colored Timed Petri Nets.

Petri Nets PNs and their variations are a graphical, mathematical language that can be used for the specification, analysis and verification of discrete event systems, including Critical Infrastructures CIs. Colored PNs are an extension of classical PNs that are suitable for modeling and analyzing complex interconnected CIs. Timed PNs are another extension of PNs that support timing constraints and events. In this work we present a novel Risk Assessment methodology based on Timed Colored PNs for modeling and analyzing CIs with interdependencies, time-critical events and cascading effects.