OT is not IT

Different systems, different stakes

Information technology moves and stores data. Operational technology moves valves, turns turbines and holds pressure. When IT fails, data is lost or exposed. When OT fails, product stops, equipment is damaged, the environment is harmed or people are hurt.

That single difference changes the order of every security priority. In IT the classic order is confidentiality, integrity, availability. In OT it is safety first, then availability and integrity of the process, with confidentiality usually last.

Assets that outlive their software

A laptop is replaced every three to five years. A controller, a protection relay or a safety system often runs for fifteen to thirty. Many were designed before network threats were considered, run operating systems their vendors no longer support, and cannot be rebooted without stopping the process.

Patching therefore happens in planned outage windows, if at all, and only after the equipment vendor has approved the change. Security has to be designed around that reality instead of assuming it away.

What goes wrong when IT thinking is applied to OT

An active scan that is routine on an office network can crash a fragile controller. An automatic account lockout on an operator station can blind a control room during an upset. A forced reboot for an update can trip a unit. Each is a correct IT control applied in the wrong place.

This is why we work from the plant floor up: we start with the process, the controllers and the safety functions, then decide which controls fit, how they are applied and who has the final word.