|How vulnerable are critical infrastructures?|
Today, social and economic processes are highly dependent on different technologies and their interaction. Critical infrastructures are therefore the "main artery" of the digitally networked society and their functionality is essential for the provision of services of general interest. System failures due to external risk factors, errors inherent to the system or unknown weak points can seriously impair the stability of societal processes. The creation of effective security measures requires above all a greater awareness of the previously underestimated problem of system dependencies.