A Conceptual Framework
In a world that continues to increase in size and complexity, the dependence on information technologies (IT) that drive our life support systems is growing rapidly. Few other technologies have spread as rapidly. This book addresses the pervasive influence that IT has had on infrastructure, namely transportation, water supply and wastewater management, energy, and telecommunications, and its users. This is especially timely in light of the growing need for critical policy, management and technological choices about the reliability and security of IT and infrastructure systems, and in particular what was deemed critical infrastructure by the President's Commission on Critical Infrastructure Protection in 1997 (US Department of Commerce, Critical Infrastructure Assurance Office 1997) and again in 2003 by the White House (White House 2003).