Penetration Testing for Energy & Utilities

Energy and utility companies operate critical infrastructure that underpins society, including power generation, electricity distribution, gas networks, water treatment, and renewable energy systems. These organisations face threats from nation-state actors, cybercriminals, and hacktivists targeting operational technology (OT) systems that control physical processes.

The convergence of IT and OT networks has created new attack vectors, with compromises of IT systems potentially providing pathways to industrial control systems. Penetration testing for energy and utilities must address both IT infrastructure and OT/SCADA systems, requiring testers with specialised expertise in industrial protocols and safety-critical environments.

Testing must be carefully planned to avoid disrupting essential services and must comply with sector-specific regulations including NIS 2 in Europe and NERC CIP in North America. The increasing deployment of smart meters, distributed energy resources, and IoT sensors across energy networks further expands the attack surface and testing requirements.

8 providers
Top UK ProviderElite TestersResearch-Driven
SECFORCE logo

SECFORCE

Leading UK offensive security consultancy based in Canary Wharf, delivering CREST-accredited penetration testing and adversary simulation to organisations with the most demanding security requirements.

95
Score
LOCLondon, United Kingdom
Web ApplicationNetworkMobile App+9
CRESTISO 27001Cyber Essentials
Best UK ProviderBest for EnterpriseResearch Leaders
NCC Group logo

NCC Group

Global cybersecurity consultancy with CREST, CHECK, and CBEST accreditation, renowned for deep technical research and comprehensive penetration testing services.

75
Score
LOCManchester, United Kingdom
Web ApplicationNetworkMobile App+13
CRESTCHECKCBEST+6
Nettitude logo

Nettitude

CREST, CHECK, and CBEST accredited UK consultancy within Lloyd's Register, delivering premium penetration testing for government and critical infrastructure.

64
Score
LOCLondon, United Kingdom
Web ApplicationNetworkMobile App+10
CRESTCHECKCBEST+2
Bridewell logo

Bridewell

Fast-growing CREST and CHECK-accredited UK cybersecurity consultancy with deep expertise in critical national infrastructure sectors.

56
Score
LOCBristol, United Kingdom
Web ApplicationNetworkCloud+7
CRESTCHECKISO 27001+1
Mandiant logo

Mandiant

World-renowned cybersecurity firm now part of Google Cloud, delivering threat intelligence-led penetration testing and red teaming informed by front-line incident response experience.

53
Score
LOCReston, Virginia, United States
Red TeamingPurple TeamingNetwork+6
SOC 2ISO 27001FedRAMP 3PAO
CrowdStrike logo

CrowdStrike

Global cybersecurity leader leveraging world-class threat intelligence from the Falcon platform to deliver intelligence-led penetration testing and red teaming.

43
Score
LOCAustin, Texas, United States
Red TeamingNetworkWeb Application+5
SOC 2ISO 27001
IOActive logo

IOActive

Elite boutique security consultancy specializing in IoT, SCADA/ICS, embedded systems, and hardware security research with world-renowned researchers.

42
Score
LOCSeattle, Washington, United States
Web ApplicationNetworkIoT+7
OSCP Employer
Secureworks logo

Secureworks

Dell Technologies-backed cybersecurity firm with elite Counter Threat Unit intelligence informing enterprise penetration testing and adversary simulation.

41
Score
LOCAtlanta, Georgia, United States
Web ApplicationNetworkCloud+7
SOC 2ISO 27001

Energy & Utilities Pen Testing FAQs

Can live OT/SCADA systems be safely pen tested?+

Yes, but with extreme care. Experienced ICS pen testers use passive techniques on live systems and may use offline replicas for active testing. Safety protocols and rollback plans are essential.

What regulations govern energy sector pen testing?+

NIS 2 (EU), NERC CIP (North America), and national energy regulators set cybersecurity requirements. Many require regular security testing of both IT and OT systems.

How do we test IT/OT convergence points?+

Testing should examine network segmentation between IT and OT, data diodes, historian servers, jump servers, and any systems that bridge the IT/OT boundary. These convergence points are critical attack paths.