I only work on power stations, but about 30 of 33 I have worked on are accessible by VPN. They aren’t staffed 24/7 and one crew will be responsible for several

I only work on power stations, but about 30 of 33 I have worked on are accessible by VPN. They aren’t staffed 24/7 and one crew will be responsible for several facilities in a geographic area. Bad weather causes problems and makes travel difficult or dangerous, so being able to control equipment remotely saves time, money or lost revenue, and is safer by avoiding dangerous travel. The ones not on VPN were owned by big enough utility to have their own private fibre networks. I am ripping out analog electronics from the 70s that nobody alive wants to support and installing PLCs with Ethernet. The attention paid to cybersecurity goes up with the size of the facility as downtime is more expensive. Failsafes preventing damage or loss of life are seperate processors from the plc and independent often redundant systems, but still digital.