Control
Generic Controller
Any device executing automated control logic where a more specific classification is not yet known.
High criticalityLevel 1
What it does
Holds the control algorithm between measurement and actuation.
Typically locatedAnywhere in the control layer.
At a glance
PurdueLevel 1
CategoryControl
Protocolsmodbus-tcp, ethernet-ip, profinet
Talks toSensors, Actuators, Supervisory systems
Common vendorsMultiple
Why should I care?
Generic Controller sits at Level 1. Compromise here is not just a data problem — it changes what the physical process does or what operators can see and control.
Common security problems
- Unclassified assets are unmanaged assets
If it is compromised
- Process manipulation
What to monitor
- Protocol behaviour
- Change events
How to defend it
- Classify and inventory before designing controls
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