A drone flying over a power plant, airport or water facility does not have to cause any physical damage to disrupt its operations. It may be enough for it to appear in the wrong place at the wrong time, while the critical entity has no idea what it is doing there. This is precisely why attention in Europe is shifting from technologies designed to neutralise drones to something less visible: the ability of critical entities to detect an incident in time, assess it correctly and manage it without unnecessary losses.