Securing the digital backbone of the energy transition.
As hydrogen, carbon capture, and renewables assets become more connected, they become more exposed. PTNZ delivers a standardised, pre-engineered OT cybersecurity package built specifically for new-build energy infrastructure — protecting production without slowing it down.
The OT Cybersecurity Challenge
Modern decarbonisation assets aren’t just physical plant — they’re data-driven from day one. Electrolysers, digital twins, IoT sensors, and remote monitoring platforms all sit on operational technology (OT) networks that were never designed with today’s threat landscape in mind.
Most cybersecurity solutions are built for IT, then retrofitted onto OT as an afterthought. PTNZ takes the opposite approach: cybersecurity engineered into the asset from concept through commissioning, standardised so it can scale as reliably as the process it protects.
Scope of the Solution
Network Architecture & Segmentation Purdue-model-aligned network design separating process control, supervisory, and enterprise IT layers — containing threats before they can reach safety-critical systems.
Monitoring & Threat Detection Continuous, passive OT-aware monitoring that flags anomalies in control traffic without disrupting live production.
Access Control & Identity Management Role-based access, secure remote access for vendors and engineers, and hardened authentication across control system interfaces.
Incident Response & Resilience Pre-built response playbooks and recovery procedures, tested against realistic OT incident scenarios — not just IT breach templates.
Key Benefits
Security engineered alongside process design, not added after commissioning
A repeatable framework, not a bespoke audit for every site
Monitoring and controls designed not to interrupt production
Technology-neutral recommendations, free from OEM lock-in
Delivery Approach
Every OT cybersecurity deployment follows the same structured, standardised methodology PTNZ applies across its product lines — engineered for repeatability across sites and asset types.
Engagement Model:
- Assess (Audit) — OT network and vulnerability assessment against IEC 62443 / NIST 800-82 baselines
- Pilot (PoC) — deploy the standardised security architecture on a single site or asset
- Scale (Enterprise) — roll out across the full asset portfolio with centralised monitoring
Why It’s Different
Most OT security providers come from an IT background and adapt their tools to industrial settings. PTNZ starts from the plant floor — our engineering teams understand process, safety, and control systems first, and layer cybersecurity on top of that domain expertise. The result is a solution that protects the asset without getting in the way of the engineers running it.
Common questions
OT cybersecurity, answered
If your question is not here, one short conversation with an engineer usually answers it faster than any page can.
Ask us directly01 What is the standardised OT cybersecurity solution?
A pre-engineered OT security and digital architecture for energy assets. Rather than designing the security of every project from a blank sheet, we start from a reference architecture that has already been thought through, then adapt it to your process, your site and your control system.
It covers the secure architecture itself and the data layer that sits on top of it, so the engineering data created during design carries through into operations instead of being rebuilt later.
02 Which standard is it aligned to?
The reference architecture is aligned to IEC 62443, the standard for industrial automation and control system security. Alignment means the architecture, the zone and conduit model and the hardening approach follow the structure the standard sets out.
Alignment is not the same as certification. If your project needs a formal certification or a third party assessment against a specific security level, tell us early and we will scope that in.
03 Why design security in rather than add it later?
Because the decisions that determine how secure an asset can be are architectural, and they are made early. Network topology, how process areas are separated, where the boundaries sit and how data leaves the plant are all fixed during design.
Retrofitting security onto a live asset means working around those decisions instead of making them. It is almost always more expensive, more disruptive and less effective than getting them right the first time.
04 Does it work with our existing control system vendor?
Yes. We hold no technology allegiances, so the architecture is designed around your process and your project specification rather than around a particular vendor's product set. Where a technology choice is still open, we can show our working on how the selection was made.
05 Can you apply this to an asset that is already operating?
Yes, though the approach differs. On a new project we design the architecture in. On a running asset we start by understanding what is actually there, then work out a route to the target architecture that fits around your operational constraints and outage windows.
The earlier we are involved the more we can do, but an operating asset is a normal starting point for us.