Stakeholder
Operations & Asset Management
For teams balancing availability, safe change and long-term support across legacy systems, supplier access, backups and limited outage windows.
Decisions and constraints for this role
Questions likely to need resolution
- uptime and outage avoidance
- operational continuity
- ageing control systems
- minimal disruption during improvement work
- vendor dependency
- unsupported systems
- maintainability after changes are made
Review focus
Meridian reviews OT exposure and improvement options around process availability, existing assets and the need to keep systems supportable.
Work and outputs
Engineering work
- Review OT architecture, support routes, and exposed interfaces around live operating constraints.
- Identify proportionate improvement options that preserve uptime, maintainability, and supplier support.
- Clarify remote access, account ownership, approval routes, and evidence requirements for operational support.
- Produce prioritised actions that can be planned around outage windows, change control, and site resource limits.
Records produced
- Operational OT cybersecurity review
- Remote access pathway register
- Asset and interface evidence summary
- Prioritised improvement plan
- Residual risk summary for operational decision-making
Related industries
These sectors commonly create the operating constraints, supplier dependencies, and assurance pressures relevant to this audience.
Gas & Energy Infrastructure
OT cybersecurity support for gas transmission, energy infrastructure, compressor control, telemetry, vendor access, safety interfaces and assurance requirements.
Industry approach
Water Utilities
Cybersecurity and documentation support for remote pumping stations, telemetry, legacy PLCs, mixed vendor estates, and ageing SCADA platforms.
Industry approach
Manufacturing
Practical support for production network segmentation, supplier-maintained machinery, engineering laptops, and line-level downtime risk.
Industry approach
Offshore & Process Industries
Assurance for vendor package systems, remote support links, strict change control, safety interfaces, and constrained maintenance windows.
Industry approachRelevant technical capabilities
These engineering activities can be included in a scoped engagement.
Assess
OT Cybersecurity Assessments
A technical baseline of a defined OT environment: system boundaries, architecture, critical assets, access routes, operating practices and the actions that warrant priority.
View capability detailsSegment
Network Segmentation Engineering
Zones, conduits, architecture drawings, firewall schedules, and migration planning for live industrial networks.
View capability detailsRisk
IEC 62443-Aligned OT Cyber Risk Assessments
Structured assessment of credible cyber threat scenarios, operational consequences, existing controls and risk treatments for a defined industrial control system.
View capability detailsDocument
Documentation & Design Support
Network drawings, IP schedules, firewall schedules, interface registers, cybersecurity procedures, and FAT/SAT documentation that support assurance and maintainability.
View capability detailsRelated services
Choose this when your project needs specialist engineering capacity. A defined OT cybersecurity work package for risk, architecture, design review, supplier interfaces and assurance evidence within an active industrial project.
Discuss operational OT cybersecurity constraints
Use the discovery call to discuss the responsibility, project stage, evidence gap or operating constraint without sharing sensitive site details.