01382nas a2200313 4500000000100000000000100001000000100002008004100003260000900044653001000053653000800063653002900071653002100100653000800121653002600129653002000155653002500175653002100200653001100221653002000232653000900252100001800261700002100279700001800300245009900318300001000417490000700427520063400434 2012 d c201210aCASoS10aCIP10acomplex adaptive systems10aDecision Support10aECI10aEU Directive 114/200810ainterdependency10aknowledge management10aknowledge portal10amethod10asecurity policy10atool1 aTodor Tagarev1 aVenelin Georgiev1 aPetya Ivanova00aAnalytical Support to Critical Infrastructure Protection Policy and Investment Decision-Making a13-200 v283 a

Critical infrastructures are complex, interlinked socio-technical systems, with impact often crossing state borders. Their protection involves governments and business organisations, interacting in the application of a broad variety of measures to provide safety and security while investing a considerable amount of public and private resources. This paper examines the challenge of making respective policy and investment decisions transparent, and a sample of methods and tools used to facilitate decision making. It also calls for contributions to a knowledge portal on security and safety of critical infrastructures.