This lot were already in the hindsight condition. The same thing happened all across France three weeks ago. THREE WEEKS. It was already obvious this could happen.

Of course this is not enough time to entirely change one's strategy, but it is a lot of time to install hardening measures, such as stronger passwords, limiting access to only MAC addresses of specific machines, taking access offline wherever possible, disabling the defrost cycle, etc., etc., etc., and that is just the obvious.