Services
OT and Critical Infrastructure Security
Greywell was founded by people from critical infrastructure, and operational technology (OT) is where that background counts most. We work alongside your engineers to secure industrial control systems (ICS) in a way that respects a running plant: safety first, availability always and every change made through your own permit to work.
What the Work Covers
- Segmentation to the Purdue model or IEC 62443 zones and conduits, including the boundary between the office and the plant
- ICS hardening reviews for SCADA, PLCs, HMIs and engineering workstations
- Remote access design for vendors and engineers
- OT asset inventories and risk assessments that operations and the board can both read
- Readiness for the Network and Information Systems (NIS) Regulations and NIS2
What You Receive
- A risk register mapped to your sites and systems
- A segmentation design or review with a phased plan that fits your maintenance windows
- Hardening recommendations ranked by risk and by what it takes to make the change on a live plant
Who It Is For
Engineering managers, OT security leads and operators of essential services in energy, water, manufacturing and transport.
How It Starts
Tell us about the site, the control systems you run and what prompted the question. We will propose a desk review or a first visit, whichever answers it faster.
Every engagement is scoped and contracted before work starts: what is in scope, what it costs, who does the work and when you will have the results.
Write to solutions@greywellcyber.com, or see the contact page.