

I worked on new SCADA for a water company across all theirs sites. Previously they were a mismatch of different systems and all airgapped.
They standardised everything and put them all on VPN. Suddenly you could access the secure water treatment works with 24/7 security guards and the control room was a bunker, from the unmanned rural sewage works with a portacabin for the server, the key hidden under a brick, and wifi for the PLCs.
The sewage works had always operated like that because it was deemed low risk. No one considered the VPN changed the threat model.









Meanwhile gas has been really reliable this year…