These are front end graphics, taken from either the system running the frontend (or the bits of the system that Derp, the night watchman, can see), or, they are images taken from the company that installed the front end.
Looks very like a ten year old 'Trend' system, the buttons at least. Suppose nothing much has changed.
I'd start at the company that installed the system and work back from there.. the poster has obviously cropped the image to hide something.
I'd be more impressed if they posted a video with alternating numerical values.. I used to draw this sort of HVAC crap for the likes of Seagate, local hospitals etc tec.. updating the graphics every 3-4 seconds with the current fan speeds/temps/pressure/water cooling temps/water heating temps.. it would take all of 10 seconds, for a control room employee to post this sort of crap and say 'look! I have control of your systems!'.
If you have access to the graphic front end, then you have physical access to the front end, or the company that created the front end, and maybe has a service contract., unless front end security control has taken a complete nosedive in the last ten years.
I'd say this is a kid with new, physical, access to systems, that they think is cool to scare people with, by posting random screen shots of..