- Andras Pataricza, Budapest University of Technology and Economics, Budapest, Hungary
Empirical assessment of resilience
Resilience is the ability of a system to return to its normal operation state after a change or disturbance. Frequently, resilience of a system can be only empirically estimated due to the complexity of the underlying mechanisms. While traditional dependability uses quantitative characteristics based on averaging the impacts of faults, resilience requires more focused attributes on the impacts of disturbances. The talk summarises the main requirements on the statistical background needed for resilience characterization and presents an approach based on Exploratory Data Analysis helping to understand disturbance impacts and their respective quantitative characterization.
Security informed safety: if it’s not secure, it’s not safe
Traditionally, safety and security have been treated as separate disciplines, but this position is increasingly becoming untenable and stakeholders are beginning to argue that if it’s not secure, it’s not safe. In this talk we present some of the work we have been doing on “security-informed safety”. Our approach is based on the use of structured safety cases and we discuss the impact that security might have on an existing safety case. We also outline a method we have been developing for assessing the security risks associated with an existing safety system such as a large-scale critical infrastructure.