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ICS/OT Security

Industrial, agrotech IoT and building OT. ISA/IEC 62443. Purdue IT/OT segmentation. Continuity-first design — scoped assessments you can buy this quarter.

ISA/IEC 62443 MITRE ATT&CK ICS Modbus DNP3 OPC-UA Profinet SCADA DCS Claroty Nozomi Purdue Model IEC 61850
What's included

ISA/IEC 62443 assessment — gap analysis, Security Levels, prioritised remediation

IT/OT Purdue segmentation — zones, conduits, industrial DMZ, VLANs

Vendor remote & jump review — kill-switch design, least privilege for integrators

Agrotech / IoT exposure maps — cameras, gateways, farm clouds (passive-first)

OT incident readiness — playbooks that protect production continuity

Isolated test lab — Proxmox + OPNsense OT twin demos without plant risk

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Core technologies
ISA 62443 SCADA Modbus DNP3 OPC-UA
FAQ

Frequently Asked Questions

Can you work on live production OT environments without downtime?
Yes. All OT assessments start with passive, non-intrusive techniques: network traffic capture, asset discovery, and configuration review. Active testing is only performed in isolated network segments or a replica lab — never on live PLCs, RTUs, or SCADA servers without explicit authorisation and a tested rollback plan.
What is ISA/IEC 62443 and why does it matter?
ISA/IEC 62443 is the international standard for industrial cybersecurity. It defines Security Levels (SL 1–4), security zones, and conduits for OT environments — and is the recognised framework for NIS2 compliance in operational technology sectors.
Does NIS2 apply to industrial and manufacturing companies?
Yes. Energy, water treatment, transport, and manufacturing sectors are explicitly in scope under NIS2. Critical infrastructure operators and essential service providers face mandatory incident notification within 24 hours and penalties up to €10M for non-compliance.

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