Energy & Utilities Cyber Security
Protecting operational technology, SCADA systems, and the converging IT/OT infrastructure of critical energy and utilities networks from state-sponsored threats, ransomware, and attacks that could disrupt national services.
Energy Sector Threat
Landscape.
Energy and utilities organisations face threats to both IT and operational technology environments, with attacks potentially causing physical disruption to essential services and national infrastructure.
IT/OT Convergence Risk
The merging of IT and operational technology networks creates new attack vectors. Compromised IT systems can now reach SCADA, PLCs, and RTUs controlling physical infrastructure including turbines, substations, and distribution networks. The Purdue Model is collapsing as cloud connectivity and remote access extend into Level 2 and Level 1 OT zones.
State-Sponsored Threats to CNI
Energy is classified as Critical National Infrastructure (CNI). State-sponsored threat actors, particularly from Russia (Sandworm, Volt Typhoon) and China, persistently target energy companies for espionage, pre-positioning, and potential disruption of essential services.
Legacy ICS & SCADA Systems
Many industrial control systems were designed decades ago without security in mind. They run proprietary protocols (Modbus, DNP3, IEC 104), lack encryption, and cannot be easily patched or replaced without service disruption. Compensating controls are essential.
Supply Chain Attack Surface
Energy companies rely on complex supply chains of vendors, maintenance contractors, and remote access providers, each representing a potential entry point for attackers to reach OT environments. The SolarWinds and MOVEit incidents demonstrate how supply chain compromise cascades into critical infrastructure.
Remote & Distributed Infrastructure
Wind farms, substations, water treatment plants, and pipeline control rooms are geographically distributed with limited physical security, creating challenges for monitoring, patching, and incident response. Each remote site extends the attack surface with VPN concentrators, cellular gateways, and satellite links.
NIS2 Regulatory Obligations
The updated NIS Regulations and incoming NIS2 impose strict requirements on Operators of Essential Services: mandatory incident reporting within 24 hours, supply chain risk management, board-level accountability, and penalties up to €10M or 2% of global turnover for non-compliance.
Energy Sector Risk Profile
Energy is the most targeted critical infrastructure sector, with OT attacks increasing 74% year-on-year and average breach costs exceeding £7.8M.
OT Attack Increase YoY
Year-on-year increase in attacks targeting operational technology and industrial control systems across energy infrastructure.
Avg. Breach Cost
Average cost of an energy sector data breach including operational disruption, regulatory penalties, and incident response.
Of CNI Attacks Target Energy
Nearly one-third of all attacks on critical national infrastructure target the energy sector specifically.
Controls
Services Mapped to Energy Regulation
Every engagement maps directly to NIS Regulations, NCSC CAF objectives, and IEC 62443 requirements. Your compliance evidence is built into the testing process.
OT/ICS Security Assessment
Specialist assessment of operational technology environments including SCADA, PLCs, HMIs, and industrial protocols. Non-disruptive testing methodologies.
Red Team Operations
Adversary simulation modelling realistic CNI attack scenarios including IT-to-OT pivots, supply chain compromises, and insider threats.
External Attack Surface Assessment
Map and assess the internet-facing attack surface of distributed energy infrastructure including VPNs, remote access portals, and cloud management planes.
24/7 SOC Monitoring
Continuous monitoring of both IT and OT networks with detection rules for industrial protocol anomalies, lateral movement, and known ICS malware families.
Managed Detection & Response
24/7 MDR with OT-specific detection: compensating controls for unpatchable systems and maintenance-window-aware monitoring.
NIS / NIS2 Assessment
Independent assessment against the NIS Regulations and preparation for NIS2 obligations covering risk management, incident reporting, and supply chain security.
NCSC CAF Assessment
Assessment against the NCSC Cyber Assessment Framework for Operators of Essential Services designated under the NIS Regulations.
Cyber Essentials Plus
Baseline technical assurance certification increasingly required by energy sector procurement and supply chain requirements.
When Do Energy Companies Commission Security Testing?
Energy sector security engagements are typically triggered by one of these six scenarios. If any apply, you are in the right place.
NIS/NIS2 Compliance Obligation
Your organisation has been designated as an Operator of Essential Services under the NIS Regulations and requires independent security assessment against the NCSC CAF.
IT/OT Network Integration
You are connecting OT environments to corporate IT, cloud platforms, or remote access systems and need to validate that IT-to-OT pivot paths are properly segmented.
CNI Threat Intelligence
NCSC advisories or threat intelligence indicate active targeting of your sector. You need assurance that your OT defences can withstand state-sponsored attack techniques.
Ofgem or Regulator Requirement
Ofgem has requested evidence of cyber security testing, or your insurer requires independent assessment of operational technology environments as a condition of coverage.
ICS Security Incident
A security incident or near-miss has affected your industrial control systems. You need post-incident assessment, forensic analysis, and hardened OT security controls.
New Site Commissioning
A new generation facility, substation, or distribution site is being commissioned and requires security validation before connecting to your operational network.
Mapped directly to your regulatory controls.
Our CREST-certified report includes compliance mapping for NIS Regulations, NCSC CAF objectives, IEC 62443 requirements, and Ofgem enforcement expectations.
NIS Regulations / NIS2
Risk management measures, incident reporting, and supply chain security for Operators of Essential Services
NCSC CAF
Cyber Assessment Framework used by Ofgem to assess cyber resilience of energy OES
IEC 62443
International standard for industrial automation and control systems security lifecycle
Ofgem Requirements
Competent authority assessments, enforcement notices, and penalties for non-compliance
CNI Standards
Critical National Infrastructure obligations under government security standards
Cyber Essentials
Baseline assurance certification required by energy sector procurement
DBS-Checked, CREST-Accredited Consultants
All OT/ICS testing is conducted by CREST-certified professionals with energy sector clearances and GICSP certifications.
Engagement Workflow
Structured to minimise operational friction and maximise the value of the testing window.
OT Environment Discovery & Scoping
Map the full OT environment: SCADA architecture, PLC inventory, network topology, IT/OT boundaries, remote access mechanisms, and regulatory scope (NIS, IEC 62443, NCSC CAF). Define safety constraints and testing windows.
Non-Disruptive OT Security Testing
CREST-accredited assessment using passive monitoring, protocol-aware scanning, and staged exploitation. IT-to-OT pivot testing, segmentation validation, and industrial protocol analysis. Safety-critical systems protected throughout.
Regulatory Mapping & Reporting
Findings mapped to NIS Regulations, NCSC CAF objectives, IEC 62443 requirements, and Ofgem compliance expectations. CVSS-scored vulnerabilities with OT-specific remediation guidance including compensating controls.
Continuous OT Monitoring
24/7 SOC monitoring with OT-specific detection rules for industrial protocol anomalies, ICS malware signatures, and IT-to-OT lateral movement. Continuous vulnerability management with maintenance-window-aware scheduling.
What You Get
Every energy sector security engagement includes the following deliverables, formatted for CISO, board, Ofgem, and insurer presentation.
Reports are delivered via encrypted portal with role-based access. Includes free retest of remediated critical and high-severity findings. All reports suitable for direct Ofgem and regulator submission.
Close the Loop.
After the Assessment.
Your OT security assessment identifies what is exploitable today. We feed those exact findings into our 24/7 Managed SOC with OT-specific detection rules, building custom alerting for industrial protocol anomalies, ICS malware signatures, and IT-to-OT lateral movement patterns specific to your infrastructure.
Explore Defensive Services24/7 SOC Monitoring
OT-aware detection rules for industrial protocol anomalies and ICS malware across energy infrastructure.
Managed Detection & Response
OT-aware monitoring with compensating controls for unpatchable systems and maintenance-window scheduling.
Red Team Operations
Full adversary simulation modelling state-sponsored IT-to-OT pivot scenarios against energy infrastructure.
Incident Response
Retainer-based ICS incident response for OT compromise, ransomware affecting operations, and CNI security events.
Full Penetration Testing Catalogue
Comprehensive penetration testing services tailored to your environment.
Internal Testing
Post-perimeter assessments targeting Active Directory, lateral movement, privilege escalation, and segmentation validation from inside your network.
The best time to test your defences is now.
Join the high-growth companies relying on Precursor for continuous offensive and defensive security.
Frequently Asked Questions
Common questions about this service, methodologies, and deliverables.
Yes. Our OT/ICS security consultants use non-disruptive testing methodologies specifically designed for operational environments. We assess SCADA, PLCs, HMIs, and industrial protocols without impacting live operations. We use passive network monitoring, protocol-aware scanning, and staged testing approaches that have been validated across multiple critical infrastructure environments without causing operational disruption.
NIS2 is the updated EU Network and Information Systems Directive. While the UK has its own NIS Regulations (retained after Brexit), UK companies operating in the EU or providing services to EU entities may need to comply with NIS2. The UK government is also reviewing NIS updates that may introduce additional requirements for Operators of Essential Services. We assess against both UK NIS Regulations and NIS2 where dual compliance is required.
We assess the entire IT/OT boundary including network segmentation, DMZ controls, data diodes, historian servers, and remote access mechanisms. Our testing models realistic IT-to-OT pivot scenarios that map to known threat actor TTPs including those documented in MITRE ATT&CK for ICS. We validate that compromise of corporate IT cannot reach safety-critical OT systems.
Our team has experience with Modbus, DNP3, IEC 61850, IEC 104, OPC UA, BACnet, PROFINET, and proprietary vendor protocols. We assess both protocol-level vulnerabilities and the systems that implement them, including authentication weaknesses, cleartext communications, and command injection vectors.
Our OT/ICS consultants are DBS-checked and carry ICS-specific certifications including GICSP and relevant vendor certifications for major SCADA and DCS platforms. All consultants are experienced in operating within safety-critical environments with formal change control procedures.
Penetration testing for energy organisations starts from £5,000 for external assessments. OT/ICS security assessments typically range from £8,000 to £25,000 depending on environment complexity and number of industrial sites. NIS compliance assessments and NCSC CAF gap analysis start from £15,000. 24/7 SOC monitoring for energy infrastructure with OT-specific detection rules starts from £4,000/month. We provide fixed-price quotes after understanding your OT environment, regulatory obligations, and site count.