Intelligent network-based early warning systems
CRITIS'06 Proceedings of the First international conference on Critical Information Infrastructures Security
Rational choice of security measures via multi-parameter attack trees
CRITIS'06 Proceedings of the First international conference on Critical Information Infrastructures Security
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Designing cyber security architecture for critical infrastructure (CI) has a number of unique challenges. One of the best practices for increasing system security is segmentation. In CI however, segmentation can work in opposition to reliability and availability requirements. Balancing these opposing forces is necessary to properly secure CI. This paper will examine the nature segmentation and its role in reducing security risk. Examples and research will be taken from control systems in the commissioning stage, security retrofits, and security concerns introduced through merger and acquisition activity. The population studied will be taken from the Power Generation, Electrical Transmission and Distribution, Water and Wastewater, and Oil and Gas sectors. This population will be limited to those who have experienced cyber security issues around segmentation and to those who have implemented cyber security segmentation in Europe, United Kingdom, Australia and North America.