Governance and requirements
Cyber standards, project controls, supplier requirements, configuration baselines, and assurance processes tailored to industrial environments.
Cyber Security
OT Cyber Security Improvement Programme
A UK gas distribution network operator strengthened its OT cyber security posture through a structured improvement programme covering governance, asset visibility, resilience, system security, and incident readiness.
The Challenge
Regulated infrastructure needed practical OT cyber control
A UK gas distribution network operator needed to strengthen the cyber security posture of its operational technology estate while continuing to support safe, reliable network operation.
The environment combined critical infrastructure, distributed sites, operational constraints, legacy technology, supplier interfaces, and regulator-facing expectations. The client needed more than a high-level assessment. It needed a deliverable improvement programme that could turn cyber requirements into practical engineering controls.
The challenge was to create a coherent blueprint across governance, asset management, configuration control, backup and recovery, system hardening, incident response, and future technology options without adding unnecessary complexity to live operations.
Our Scope
A structured programme across the OT lifecycle
ICSS developed and delivered an OT cyber security improvement programme shaped around the client's existing documentation, operational requirements, site constraints, and regulatory obligations.
The work covered governance and risk controls, including updates to OT cyber standards, project management processes, supply chain requirements, and security configuration requirements. This gave the client a clearer route for embedding cyber security into future projects and supplier scopes.
Our team improved asset management and configuration control by validating asset records, identifying gaps, supporting representative site verification, and defining a stronger approach to baselines, backups, and IT/OT change management.
The programme also addressed technology resilience, system security, and incident management. This included backup and recovery arrangements, maintenance and configuration processes, OT incident response procedures, playbooks, training requirements, and exercise planning.
As part of the forward-looking workstream, ICSS also completed a virtualisation concept study to assess how OT virtualisation could support resilience, security, and operational efficiency within a critical gas infrastructure environment.
The Result
Milestones met and expectations achieved
The improvement programme was delivered successfully, with all key milestones achieved and regulator-facing expectations satisfied.
The client gained a practical OT cyber security blueprint that connected policy, engineering, site implementation, supplier requirements, and operational response into one controlled programme. This helped move cyber security from a set of separate concerns into a managed lifecycle activity.
Asset visibility, configuration management, backup discipline, and incident readiness were strengthened, giving technical and management teams a clearer view of current exposure and the actions required to maintain resilience over time.
By keeping the work grounded in operational reality, ICSS helped the client improve assurance while preserving the reliability, safety, and continuity expectations associated with essential gas distribution infrastructure.
Cyber Security
Practical and proportionate OT cyber risk mitigation.
We bridge the gap between OT cyber risk and operational reality. That means governance people can follow, requirements that are deliverable, and countermeasures that protect assets without adding unnecessary complexity.
Resilience and response
Backup and recovery, incident playbooks, response exercises, and operational readiness that keep critical systems protected and recoverable.
Start Here
Need help with an OT cyber security improvement programme?
Tell us what you are trying to protect, where your operational constraints sit, and what level of assurance you need to demonstrate. We will help shape a practical route from assessment into controlled delivery.