Critical infrastructures are systems, processes and networks that are of essential importance for maintaining societal functions. Attacks on such structures by cybercriminals are on the rise, sometimes with serious consequences for the economy and society. Kapsch offers a highly effective answer to this problem: holistic security concepts. Every security-related aspect is covered in this way: Finding weaknesses, identifying structural problems, analyzing attack patterns, proactive and preventive measures, securing of evidence, warding and defense solutions, establishing sustained protections.