I am ready to bet that this was not supposed to be connected to Internet, but it was just more convenient to use this « workstation » for multiple use, and so

I am ready to bet that this was not supposed to be connected to Internet, but it was just more convenient to use this « workstation » for multiple use, and so hook it up to the company office network and automation network. Cyber security is mostly a matter of policy and control, rather than technical issues.