My only question is, why would all refrigeration be under the remote control of DECA? That seems unnecessarily complicated.
The article posits that they may just have centralized monitoring, not control. Since this didn't affect every location, I would assume it was a shared default password or something
… the article does posit this … nonsensically. TFA also establishes that "RMCS" stands for "Remote monitoring and control system". I would think the "and control" portion of the acronym would indicate that it is centralized monitoring … and control.