Electrical power supply is a central part of mission-critical infrastructures. Outages or disturbances of these infrastructures have severe consequences and immediate effects on the other sectors and therefore on the state, economy and society. That is why they have to be secured safely and reliably so that outages can be prevented before they even occur. The new IT Safety Act has established a legal basis for the IT security of mission-critical infrastructure. Municipal utilities all over the European Union are now facing the challenge of fulfilling these compliance regulations. […]