Operational technology faces threats that IT security alone cannot address. Here are the architectural principles that keep industrial control systems safe.
As operational and information technology converge, the attack surface of industrial facilities grows. Protecting control systems demands an approach purpose-built for OT — where availability and safety come first.
Segment, then monitor
Defence-in-depth starts with zoning and conduits aligned to IEC 62443. Segmenting OT from IT — and segmenting within OT — limits the blast radius of any compromise.
- Zone-and-conduit network segmentation
- Hardened, audited remote access
- Continuous anomaly monitoring for ICS/SCADA
- Regular risk assessments and patch strategy
In OT, the goal is not just confidentiality — it is keeping the process safe and running.
Monitoring completes the picture. Continuous detection of anomalous behaviour gives operators the early warning they need to respond before an incident becomes an outage.
