In the frame of the European Programme on Critical Infrastructure Protection (EPCIP), Directorate-General “Justice, Freedom and Security” has published a call for tenders of interest for the information society sector. The study was foreseen in the annual work programme 2007 on "Prevention, Preparedness and Consequence management of Terrorism and other Security related risks" which contributes, among other things, to the development of EPCIP. This study should for each of the three sectors mentioned (energy, finance and transportation) examine what are the critical ICT based dependencies, identify and assess existing early warning systems and protection strategies, as well as identify existing best practices to counter or mitigate cyber vulnerabilities and threats. On the basis of the findings and learnings, for each individual sector under consideration, the study should provide appropriate recommendations.