Patching OT requires process context
Whether a patch can be applied depends on what the machine is doing and when, not on how severe the flaw is.
The same update is trivial during a scheduled shutdown and impossible mid-batch. Anybody prioritising OT patching without knowing the production calendar is producing a list nobody can act on, which is how security teams end up ignored by operations.
More on OT and ICS
- A cyber command can have physical consequencesThe keystroke has a lever on the end
- Legacy does not mean unnecessaryOld, and holding the whole line
- Segmentation protects process zonesBulkheads, not one big hold
- Remote maintenance changes the plant perimeterThe fence now goes round their kitchen table
- Process anomalies can be security signalsThe plant noticed first
- Asset discovery must not disrupt fragile systemsListen to it, do not knock on it