Maritime Cyber Security Consultancy
As one of the UK’s leading cyber security consultancies, Arcanum combines military-grade expertise with commercial insight to protect vessels, ports, and offshore platforms from evolving digital threats.
Our maritime cyber security experts deliver risk assessments, compliance support, and incident response consultancy to protect vessels and critical maritime infrastructure against evolving cyber threats.
Why Maritime Cyber Security Matters
Over 90% of world trade, including energy transportation, moves by sea. As vessels and offshore platforms become increasingly digitised, their exposure to cyber risk grows — especially as crews become smaller and systems more connected.
Key Maritime Cyber Regulations and Frameworks
Compliance is critical, but true resilience goes beyond ticking boxes. Our consultants help clients interpret and implement evolving maritime cyber regulations.
IMO Unified Requirements E26 and E27 (Effective July 2024)
NIS2 Directive and Port Cyber Obligations
IEC 62443 – The Framework for OT and ICS Security
Our ISA/IEC 62443 experts guide maritime organisations through the framework’s defence-in-depth model, ensuring industrial control systems onboard and ashore are secured from the ground up.
EU Data Act and UK’s Principles-Based Assurance (PBA)
Read more about Arcanum’s insights from London International Shipping Week 2025 and the latest developments shaping maritime cyber security.
29th September 2025
Navigating the cyber seas
Building Maritime Cyber Resilience
Our team applies proven methods across system accreditation, secure architecture design, penetration testing, and digital forensics – helping maritime organisations strengthen every layer of their cyber resilience.
Our maritime cyber capabilities include:
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Security Accreditation & Compliance
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De-risking System Procurement
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Secure Architecture Design
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Digital Forensics & Incident Response
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Penetration Testing & IT Health Checks
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Cyber Security Awareness & Training
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Security Requirements Engineering
Why Choose Arcanum for Maritime Cyber Security?
Arcanum brings deep expertise in COMAH cyber security, helping operators achieve compliance and protect critical operations:
UK Government-Accredited Cyber Security Consultancy
Arcanum is a trusted, UK-accredited cyber security consultancy with a proven record supporting government, defence, and critical national infrastructure. Our credentials ensure the highest levels of assurance for maritime operators and technology suppliers.
ISA/IEC 62443 and ISO 27001 Experts
Our consultants are specialists in the internationally recognised IEC 62443 and ISO 27001 frameworks. We help shipowners and port authorities apply these standards to protect operational technology and industrial control systems against evolving threats.
Experience Across Maritime and Operational Technology (OT)
We understand the unique cyber risks facing vessels, ports, and offshore assets. From propulsion and navigation systems to port automation and satellite links, we deliver practical, sector-specific solutions that secure every layer of operation.
Proven Record in Compliance and Risk Management
Arcanum has guided organisations through complex regulatory landscapes, including IMO E26/E27, NIS2, and the EU Data Act. Our compliance and risk experts ensure your operations meet international requirements while maintaining efficiency and resilience.
Trusted by Operators Across Energy, Transport, and Defence
With clients spanning multiple high-risk sectors, Arcanum brings cross-industry insight into best practice and incident response. Our multidisciplinary expertise enables us to deliver robust, future-ready cyber resilience strategies for the maritime domain.
Comprehensive Training and Cyber Awareness Programmes
Arcanum empowers maritime crews and port personnel with tailored cyber awareness training and incident response exercises. By strengthening the human element, we help organisations build a culture of security that complements technical defences and supports long-term resilience.
Clients we serve
Arcanum is trusted to provide cyber security expertise at the highest level by clients including the UK government, the nuclear power industry, major manufacturers and other industrial and commercial organisations.
Cybersecurity governance for the Space industry
Download our 3-piece blog which covers the vital role of cybersecurity governance in the commercial Space industry.
Expertise you can trust
As a NCSC Assured Service Provider, Arcanum delivers cyber consultancy that meets the highest national security standards. Our Operational Technology (OT) specialists have worked extensively in rail, aviation, energy, defence, and other safety-critical sectors.
We provide strategic insight and technical depth to help you secure, future-ready Maritime systems.
FAQs
What is maritime cyber security?
Maritime cyber security refers to the protection of ships, ports, and offshore infrastructure from cyber threats that target both Information Technology (IT) and Operational Technology (OT) systems. It covers everything from navigation and propulsion systems to satellite communications, ensuring the safety, security, and continuity of global shipping operations.
Why is cyber security important in the maritime industry?
Modern vessels and ports rely heavily on digital systems for navigation, logistics, and crew management. A single cyber incident can disrupt operations, cause financial losses, and endanger human life. As threats increase — from ransomware to GPS spoofing — cyber security has become a strategic priority for ship operators and port authorities worldwide.
What are the IMO Unified Requirements E26 and E27?
The International Maritime Organization (IMO) introduced the Unified Requirements E26 and E27 for vessels contracted from July 2024.
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E26 focuses on the cyber resilience of the vessel as a whole.
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E27 covers individual onboard systems.
Together, they establish a global benchmark for safeguarding critical OT systems essential to vessel safety and navigation.
How does the IEC 62443 framework apply to the maritime sector?
IEC 62443 is an international cyber security standard for industrial control and automation systems. In the maritime context, it helps shipowners, operators, and port authorities protect OT environments through a layered defence-in-depth approach. It supports compliance with IMO and NIS2 requirements while strengthening resilience across vessels, ports, and supporting infrastructure.
How can Arcanum help my organisation achieve maritime cyber resilience?
Arcanum provides end-to-end maritime cyber security consultancy — from IMO and NIS2 compliance to IEC 62443 implementation and OT risk assessments. Our experts work with shipyards, operators, and technology suppliers to design secure architectures, improve incident readiness, and ensure ongoing cyber resilience across maritime operations.
What are the main cyber risks to satellite and port operations under NIS2?
Under the NIS2 Directive, ports and maritime service providers must strengthen their cyber defences across both IT and OT systems — including satellite communications that connect ships and shore-based networks. Key risks include signal jamming, GPS spoofing, and command interference, which can disrupt navigation, logistics, and crew communications. NIS2 requires 24-hour incident reporting, disaster recovery planning, and secure supply chain management to mitigate these threats.
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Partner with Arcanum to secure your systems
Whether you operate ships, manage ports, or build maritime technology, Arcanum can help you stay ahead of evolving cyber risks.