**5. Conclusions**

By extending previous time-based dependency analysis models and by integrating the effect of resilience-related security controls, in this paper we have examined the effect of possible mitigation strategies in dynamically reducing the consequences of cascading effects. The model was applied to a real case study involving an urban area of Rome where a number of critical infrastructures deliver services to inhabitants and businesses. The model was set up by considering a precomputed dependency graph that exhibits the cyber dependencies of a set of infrastructures. The results highlight the most critical dependency chains and the areas with high concentration of critical nodes. The model was integrated into CIPCast Decision Support System allowing all actors involved in securing critical infrastructures to plan mitigation strategies aiming at reducing the overall risk of service degradation in the considered area.

### **Acknowledgements**

Authors wish to acknowledge the funding of project RAFAEL (MIUR ARS01\_ 00305) which has partly funded the research activities carried out for this work.

*Integrating Resilience in Time-based Dependency Analysis: A Large-Scale Case Study… DOI: http://dx.doi.org/10.5772/intechopen.97809*
