@SuperMoosie @outie @JohnJBurnsIII @q3k this not some random dude servicing the train. It's a train service yard with huge infrastructure and a huge contract. In this story they describe going through the huge maintenance manual and finding no mention of these things. If it's a certification thing then it should clearly state this.
https://badcyber.com/dieselgate-but-for-trains-some-heavyweight-hardware-hacking