OT / ICS Security
IEC 62443 OT/ICS security for energy, ports, water, and telecom.
The situation
01
Operational technology (OT) and industrial control systems (ICS) cannot be treated like corporate IT. Safety, uptime, and process integrity constrain how assessment and change are performed.
Difaa delivers OT/ICS security using IEC 62443, with passive-first discovery, IT/OT segmentation design, secure remote access, and OT-aware monitoring scoped per site.
What you get
02
- IEC 62443 gap assessment and maturity analysis
- Passive OT asset discovery and network mapping
- IT/OT segmentation and secure remote-access design
- Safety-led risk analysis for control environments
- OT-aware monitoring and incident response design
- Per-site remediation roadmap aligned to production constraints
The approach
03 · Three steps
- On site01
Passive survey
Map assets and traffic using passive methods first. No intrusive testing against live control without explicit operational approval.
- Assessment02
IEC 62443 and segmentation
Assess against IEC 62443 and design zoning / segmentation that isolates risk without disrupting operations.
- Sustain03
Monitor and improve
Establish OT-aware monitoring where appropriate and a phased roadmap operators can execute.
Who it’s for
04
First OT security programme; need a non-disruptive baseline.
Connecting or modernizing ICS environments that were previously air-gapped.
Critical infrastructure operators with national continuity and safety obligations.
What clients do next
05
Operators typically start with a single-site passive IEC 62443 assessment, then expand to multi-site programmes and OT monitoring.
Next step
Scope an OT assessment.
Describe the site and process constraints. We will propose a passive-first IEC 62443 assessment.
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