A line stops and nobody can say whether it is a fault or an intrusion
OTControllers and HMIs run software that predates the security team, often supported by an OEM contract that forbids modification. When output stops, the first hours go on establishing whether this is mechanical, a control fault or something else, and every one of those hours is production.
Operational Technology on HexaOT, passive by design across control and field systems, feeding the HexaShield SOC so that Managed SOC / MDR analysts hold plant context before an event rather than acquiring it during one. AI triage cuts the noise; people own containment.
The fault-or-intrusion question is answered in the first conversation rather than the first afternoon. Engineering keeps its focus on restoring output, and the security answer arrives alongside the operational one instead of behind it.