Oil & Gas Critical Infrastructure Security
OT/ICS cybersecurity for the energy sector across the UK, Europe, and the Middle East
Protecting Energy Infrastructure
Oil & gas operations depend on operational technology (OT) — SCADA systems, distributed control systems (DCS), programmable logic controllers (PLCs), and safety instrumented systems (SIS) — that were often designed for reliability and uptime long before they were exposed to modern cyber threats. We help upstream, midstream, and downstream operators secure these environments without disrupting production or compromising safety.
Threats Across the Value Chain
- Upstream: drilling, wellhead, and remote field telemetry exposed over wide-area and satellite links
- Midstream: pipeline SCADA, compressor and pumping stations, and metering systems
- Downstream: refinery DCS, terminals, and storage with complex safety dependencies
- Ransomware and IT-to-OT lateral movement disrupting operations
- Insecure remote access for vendors and field engineers
- Legacy and unpatched control systems with flat, unsegmented networks
Services
- OT/ICS/SCADA security assessments and architecture review
- OT asset discovery and visibility (passive and safe active methods)
- Network segmentation and OT/IT zone-and-conduit design
- IEC 62443 and NIST SP 800-82 compliance and gap analysis
- Vulnerability management for industrial control systems
- OT-aware security monitoring and SIEM integration
- Incident response planning and tabletop exercises for energy
- Secure remote access design for vendors and field operations
Safety and Security, Together
In industrial environments, availability and safety come first. Our assessments are designed to respect process integrity — favouring passive monitoring and carefully scoped testing — so that security improvements never put personnel, the environment, or production at risk. We work alongside your process safety and engineering teams, not around them.
Our Methodology
1. Discover
Build an accurate OT asset inventory and map data flows, trust zones, and conduits across the environment.
2. Assess
Evaluate against IEC 62443 and NIST SP 800-82, identify exposures, and prioritise by operational and safety impact.
3. Segment & Harden
Design zone-and-conduit segmentation, secure remote access, and hardening that preserves uptime and safety.
4. Monitor & Respond
Deploy OT-aware monitoring and build incident response playbooks tailored to industrial operations.
Frameworks & Standards
- IEC 62443 (industrial automation and control systems security)
- NIST SP 800-82 (Guide to OT Security)
- NIST Cybersecurity Framework
- API standards for the oil & natural gas sector
- ISO/IEC 27001 for enterprise IT alignment
Why Pyramid Ledger
A London-headquartered cybersecurity firm serving energy operators across the UK, Europe, and the Middle East, we bring OT security engineering grounded in international standards and an operations-first mindset. We help energy organisations and their suppliers raise their security posture in step with regulatory expectations and the realities of running critical infrastructure.