Given the number of cyber attacks across Europe it would be weird if EU countries were not preparing for more attacks. It certainly looks like we are being probed for weaknesses.Its the unison nature of it across Europe that is a bit weird. Almost like they expect a major emergency event(s) to occur in the foreseeable future?
If water and electricity networks across Europe were attacked at the same time, along with hospital IT systems, telecommunication infrastructure, traffic management infrastructure, and banking, it would certainly cause a significant amount of disruption. If on the same day a large number of undersea data cables and power lines were blown up and Russia rolled into somewhere like Latvia or Estonia it would certainly reduce the effectiveness of any coordinated military response by EU Countries.