Can critical infrastructures rely on the Internet?

Simulation shows that priority services produce dialectics of alleviation and risks during an attack. They ensure routing update information thus making routing more stable and thereby reducing packet losses, in particular for CI data packets. Whereas priority service always matters during CI failures, that service itself could be a risk for packet transport if a worm takes up the highest priority class, reserved for routing information, to ensure its unhampered propagation. Therefore, the remedy defenders introduce a crisis, i.e. priority service, which could be abused by those attacking the network.