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Key takeaways
- Energy is critical infrastructure with physical-impact risk.
- IT/OT convergence requires joint governance.
- Supplier and remote access risks are prominent.
- Resilience means safe operation even during an incident.
The risk picture
Energy companies operate distributed assets, rely on industrial control systems and depend on many contractors. Attacks on IT systems can force precautionary OT shutdowns even when OT itself is untouched.
Priorities
| Area | Action |
|---|---|
| OT visibility | Passive asset discovery and monitoring |
| Segmentation | Zones and conduits between IT, DMZ and OT |
| Remote access | Controlled, recorded vendor access |
| Incident response | Joint IT/OT playbooks with safety engineers |
| Resilience | Manual operation procedures, backups of controller logic |
| Third parties | Security clauses and oversight of contractors |
Regulation
Critical infrastructure regulations, sector standards and frameworks such as IEC 62443 and NIST guidance shape requirements.
Governance
Joint ownership between the CISO and operations leadership, with clear decision rights during incidents, is essential.
Building an IT/OT security operating model
Many energy organizations run separate IT and OT teams with different priorities and vocabularies. A workable operating model defines who sets standards, who approves changes in the plant, who monitors OT networks and who leads during an incident. A joint IT/OT security steering group, chaired by an executive with authority over both, resolves conflicts quickly and keeps investment balanced.
A 12-month resilience plan
| Quarter | Focus |
|---|---|
| Q1 | OT asset discovery, remote access hardening, IT/OT firewall review |
| Q2 | OT monitoring connected to the SOC, joint incident playbooks |
| Q3 | Backup of controller logic and engineering workstations, recovery drills |
| Q4 | Supplier security requirements, tabletop exercise with operations leadership |
Questions boards should ask
- Could an IT ransomware incident force us to stop production, and for how long?
- Do we know every remote connection into our plants?
- When did we last rehearse manual operation of a critical site?
- Which contractors have privileged access, and how is it controlled?
How NAZZTEC helps
We assess OT environments with passive, safety-first methods, design segmentation and secure remote access, connect OT detection to 24x7 monitoring and run joint IT/OT exercises with operations and safety teams.
Next step: read our OT and ICS cybersecurity guide or see Industry Solutions.
Frequently asked questions
Where should an energy company start?
With OT asset visibility and secure remote access — both reduce risk quickly.
How do we test OT resilience safely?
Through tabletop exercises, simulation environments and carefully planned tests during maintenance windows.
Is cloud used in OT?
Increasingly for analytics and monitoring, with strict architecture controls.
NAZZTEC Editorial TeamWritten and reviewed by NAZZTEC practitioners. This briefing is general guidance, not legal advice.
