Critical Information Infrastructures Security [electronic resource] : 4th International Workshop, CRITIS 2009, Bonn, Germany, September 30 - October 2, 2009. Revised Papers / edited by Erich Rome, Robin Bloomfield.

On Modelling of Inter-dependent Network Infrastructures by Extended Leontief Models -- Critical Infrastructure Protection in Brazil - Threat Identification and Analysis -- Development of Information Security-Focused Incident Prevention Measures for Critical Information Infrastructure in Japan -- Design of a Mobile Agent-Based Adaptive Communication Middleware for Federations of Critical Infrastructure Simulations -- An Alternate Topology Generator for Joint Study of Power Grids and Communication Networks -- Trouble Brewing: Using Observations of Invariant Behavior to Detect Malicious Agency in Distributed Control Systems -- Optimisation of Critical Infrastructure Protection: The SiVe Project on Airport Security -- Cyber-Critical Infrastructure Protection Using Real-Time Payload-Based Anomaly Detection -- Decision Aid Tool and Ontology-Based Reasoning for Critical Infrastructure Vulnerabilities and Threats Analysis -- Application Filters for TCP/IP Industrial Automation Protocols -- Web Browser Security Update Effectiveness -- State-Based Network Intrusion Detection Systems for SCADA Protocols: A Proof of Concept -- Towards Early Warning Systems – Challenges, Technologies and Architecture -- CII Protection - Lessons for Developing Countries: South Africa as a Case Study -- Energy Theft in the Advanced Metering Infrastructure -- Current Capabilities, Requirements and a Proposed Strategy for Interdependency Analysis in the UK -- Stochastic Modelling of the Effects of Interdependencies between Critical Infrastructure.