Service

ICS/OT Security

Critical industrial infrastructure. ISA/IEC 62443. Purdue model IT/OT segmentation, real-time anomaly detection. 99.95% uptime.

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 — full audit, GAP analysis, Security Levels, prioritised remediation

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

OT anomaly detection with AI — behaviour baselining, real-time deviation detection (Claroty, Nozomi)

Industrial protocol hardening — Modbus, DNP3, OPC-UA, Profinet traffic analysis and access control

OT incident response — ICS-specific playbooks, containment without production impact

Isolated test lab — Proxmox + OPNsense to simulate OT topologies risk-free

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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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