Prof. Matthias Hollick: “Digital infrastructures in networked cities must remain available, understandable and controllable at all times. Crises such as cyber attacks, natural disasters, human and technical failure, violence and terror endanger the reliable operation of IT systems. It is therefore necessary to be able to guarantee the operation of critical infrastructures even in the event of a crisis and with a high degree of networking. Contributions on this topic were published on Süddeutsche Zeitung,, Spiegel and Zeit Online, among others.