Cyber Threats Impacting Critical Infrastructures

Nowadays it is important to note that security of critical infrastructures and enterprises consists of two factors, those are cyber security and physical security. It is important to emphasise that those factors cannot be considered separately and that the comprehensive cyber-physical approach is needed. In this paper we analyse different methods, methodologies and tools suits that allows modelling different cyber security aspects of critical infrastructures. Moreover, we provide an overview of goals an challenges, an overview of case studies (which show an increasing complexity of cyber physical systems), taxonomies of cyber threats, and the analysis of ongoing actions trying to comprehend and address cyber aspects.