--- title: "UK CNI Threat Landscape 2026: sector-by-sector | Firevault" description: "State actors, ransomware groups, and supply chain vulnerabilities converge on UK critical infrastructure. Understanding the threat informs the defence." lang: en-GB json-ld: | [ { "@context": "https://schema.org", "@type": "Organization", "@id": "https://fire-vault.com/#organization", "name": "Firevault", "legalName": "Firevault Limited", "url": "https://fire-vault.com", "logo": { "@type": "ImageObject", "url": "https://fire-vault.com/logo.png", "width": 200, "height": 60 }, "foundingDate": "2025-03", "description": "Firevault has rewritten the rules for data protection & storage via its offline secure storage (OSS) platform, for users to vault everything that matters.", "address": { "@type": "PostalAddress", "addressCountry": "GB", "addressLocality": "United Kingdom" }, "contactPoint": [ { "@type": "ContactPoint", "contactType": "customer service", "email": "hello@fire-vault.com", "availableLanguage": "English", "areaServed": "GB" } ], "sameAs": [ "https://www.linkedin.com/company/firevault", "https://x.com/firevaultuk" ], "slogan": "Disconnect to Protect", "knowsAbout": [ "Offline Secure Storage", "Physical Air Gap Data Protection", "Ransomware Protection", "Data Sovereignty", "GDPR Compliance", "NIS2 Compliance" ] }, { "@context": "https://schema.org", "@type": "WebSite", "@id": "https://fire-vault.com/#website", "name": "Firevault", "alternateName": [ "Firevault", "Firevault UK", "Firevault Limited" ], "url": "https://fire-vault.com", "publisher": { "@id": "https://fire-vault.com/#organization" }, "inLanguage": "en-GB", "description": "Firevault has rewritten the rules for data protection & storage via its offline secure storage (OSS) platform, for users to vault everything that matters.", "potentialAction": { "@type": "SearchAction", "target": { "@type": "EntryPoint", "urlTemplate": "https://fire-vault.com/learn?q={search_term_string}" }, "query-input": "required name=search_term_string" } }, { "@context": "https://schema.org", "@type": "WebPage", "@id": "https://fire-vault.com/learn/knowledge/uk-cni-threat-landscape-2026#webpage", "url": "https://fire-vault.com/learn/knowledge/uk-cni-threat-landscape-2026", "name": "UK CNI Threat Landscape 2026: sector-by-sector", "description": "State actors, ransomware groups, and supply chain vulnerabilities converge on UK critical infrastructure. Understanding the threat informs the defence.", "isPartOf": { "@id": "https://fire-vault.com/#website" }, "about": { "@id": "https://fire-vault.com/#organization" }, "primaryImageOfPage": { "@type": "ImageObject", "url": "https://fire-vault.com/images/og/og-base-learn.jpg" }, "inLanguage": "en-GB", "breadcrumb": { "@id": "https://fire-vault.com/learn/knowledge/uk-cni-threat-landscape-2026#breadcrumb" } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "@id": "https://fire-vault.com/learn/knowledge/uk-cni-threat-landscape-2026#breadcrumb", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://fire-vault.com" }, { "@type": "ListItem", "position": 2, "name": "Learn", "item": "https://fire-vault.com/learn" }, { "@type": "ListItem", "position": 3, "name": "Knowledge Vault", "item": "https://fire-vault.com/learn/knowledge" }, { "@type": "ListItem", "position": 4, "name": "UK CNI Threat Landscape 2026", "item": "https://fire-vault.com/learn/knowledge/uk-cni-threat-landscape-2026" } ] }, { "@context": "https://schema.org", "@type": "Article", "headline": "UK CNI Threat Landscape 2026", "description": "State actors, ransomware groups, and supply chain vulnerabilities converge on UK critical infrastructure. Understanding the threat informs the defence.", "url": "https://fire-vault.com/learn/knowledge/uk-cni-threat-landscape-2026", "image": "https://zomvctmqpgirvjnvawlz.supabase.co/storage/v1/object/public/article-images/og-cached/649ad906347d6f17.png", "author": { "@type": "Person", "name": "Mark Fermor", "worksFor": { "@id": "https://fire-vault.com/#organization" }, "url": "https://fire-vault.com/why-oss/about" }, "publisher": { "@id": "https://fire-vault.com/#organization" }, "datePublished": "2026-01-29T00:00:00.000Z", "dateModified": "2026-01-29T00:00:00.000Z", "mainEntityOfPage": { "@type": "WebPage", "@id": "https://fire-vault.com/learn/knowledge/uk-cni-threat-landscape-2026" }, "inLanguage": "en-GB", "articleSection": "Knowledge", "isAccessibleForFree": true, "copyrightHolder": { "@id": "https://fire-vault.com/#organization" }, "copyrightYear": 2026 } ] --- Recent Breaches Breaches [2026 PowerSchool 62.4M records ](https://www.bleepingcomputer.com)[2026 DISA Global Solutions 3.3M records ](https://techcrunch.com)[2026 Globe Life 850K records ](https://www.securityweek.com)[2026 Lidl GB Customer contact data ](https://www.theguardian.com/business/2026/jun/11/lidl-gb-third-party-data-breach)[2026 Asahi Group Production systems disrupted ](https://www.reuters.com/technology/cybersecurity/asahi-says-cyberattack-disrupted-operations-japan-2025-09-29/)[2026 Kido International 8K records ](https://www.bbc.co.uk/news/articles/c623d7v0e5xo)[2026 Collins Aerospace (RTX) Check-in and boarding disruptio... ](https://www.bbc.co.uk/news/articles/c789e7l1z7po)[2026 Jaguar Land Rover Production and IT systems disru... ](https://www.bbc.co.uk/news/articles/cx2gx8p3rzeo)[2026 Peter Green Chilled Order and logistics data ](https://www.bbc.co.uk/news/articles/c0k7yy8n3g5o)[2026 Adidas UK Customer contact details ](https://www.bbc.co.uk/news/articles/c78jkev1el2o)[2026 PowerSchool 62.4M records ](https://www.bleepingcomputer.com)[2026 DISA Global Solutions 3.3M records ](https://techcrunch.com)[2026 Globe Life 850K records ](https://www.securityweek.com)[2026 Lidl GB Customer contact data ](https://www.theguardian.com/business/2026/jun/11/lidl-gb-third-party-data-breach)[2026 Asahi Group Production systems disrupted ](https://www.reuters.com/technology/cybersecurity/asahi-says-cyberattack-disrupted-operations-japan-2025-09-29/)[2026 Kido International 8K records ](https://www.bbc.co.uk/news/articles/c623d7v0e5xo)[2026 Collins Aerospace (RTX) Check-in and boarding disruptio... ](https://www.bbc.co.uk/news/articles/c789e7l1z7po)[2026 Jaguar Land Rover Production and IT systems disru... ](https://www.bbc.co.uk/news/articles/cx2gx8p3rzeo)[2026 Peter Green Chilled Order and logistics data ](https://www.bbc.co.uk/news/articles/c0k7yy8n3g5o)[2026 Adidas UK Customer contact details ](https://www.bbc.co.uk/news/articles/c78jkev1el2o) [View All →](/learn/breaches) [![Firevault - offline secure storage, physically disconnected from the internet](/assets/logo-color-DBVl0KCg.png)](/) Products Solutions [Why OSS](/why-oss) More [Help](/help)[Get started](/get-started) Overview State-Sponsored ThreatsThe Ransomware EvolutionSupply Chain VulnerabilitiesThe Case for Physical DisconnectionThreat-Informed ArchitectureLooking ForwardConclusionMore [Knowledge Vault](/learn/knowledge)/ Knowledge Knowledge · 29 January 2026 # UK CNI Threat Landscape 2026 State actors, ransomware groups, and supply chain vulnerabilities converge on UK critical infrastructure. Understanding the threat informs the defence. ![Mark Fermor](/assets/mark-fermor-aWtKNSv7.jpg) Mark Fermor Director & Co-Founder, Firevault 4 min read Share [](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Ffire-vault.com%2Flearn%2Fknowledge%2Fuk-cni-threat-landscape-2026)[](https://twitter.com/intent/tweet?url=https%3A%2F%2Ffire-vault.com%2Flearn%2Fknowledge%2Fuk-cni-threat-landscape-2026&text=UK%20CNI%20Threat%20Landscape%202026%0A%0AState%20actors%2C%20ransomware%20groups%2C%20and%20supply%20chain%20vulnerabilities%20converge%20on%20UK%20critical%20infrastructure.%20Understanding%20the%20threat%20informs%20the%20defence.)[](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Ffire-vault.com%2Flearn%2Fknowledge%2Fuk-cni-threat-landscape-2026)[](mailto:?subject=UK%20CNI%20Threat%20Landscape%202026&body=State%20actors%2C%20ransomware%20groups%2C%20and%20supply%20chain%20vulnerabilities%20converge%20on%20UK%20critical%20infrastructure.%20Understanding%20the%20threat%20informs%20the%20defence.%0A%0Ahttps%3A%2F%2Ffire-vault.com%2Flearn%2Fknowledge%2Fuk-cni-threat-landscape-2026) Knowledge #OSSOffline Secure Storage® Why it matters ## What this means for organisations holding critical data State actors, ransomware groups, and supply chain vulnerabilities converge on UK critical infrastructure. Understanding the threat informs the defence. **On this page**[State-Sponsored Threats](#section-0)[The Ransomware Evolution](#section-1)[Supply Chain Vulnerabilities](#section-2)[The Case for Physical Disconnection](#section-3)[Threat-Informed Architecture](#section-4)[Looking Forward](#section-5)[Conclusion](#section-6) On this page 1. [State-Sponsored Threats](#section-0) 2. [The Ransomware Evolution](#section-1) 3. [Supply Chain Vulnerabilities](#section-2) 4. [The Case for Physical Disconnection](#section-3) 5. [Threat-Informed Architecture](#section-4) 6. [Looking Forward](#section-5) 7. [Conclusion](#section-6) The threat landscape facing UK Critical National Infrastructure has never been more complex. State-sponsored actors, sophisticated criminal enterprises, and supply chain vulnerabilities create overlapping risks that traditional security architectures struggle to address. Understanding this landscape is essential for proportionate, effective defence. ## State-Sponsored Threats The NCSC has issued multiple warnings about state-sponsored cyber activity targeting CNI networks. These campaigns are characterised by: - **Long-term access objectives**: Unlike criminal actors seeking immediate monetisation, state actors often seek persistent access for intelligence gathering or pre-positioning for future disruption - **Advanced techniques**: State actors deploy sophisticated tools and techniques, often including zero-day exploits unknown to defenders - **Specific targeting**: Rather than opportunistic attacks, state campaigns focus on specific sectors and organisations with strategic value - **Resource availability**: State actors have time, funding, and expertise that exceeds most defensive capabilities The NCSC has specifically warned about Chinese state-sponsored actors targeting CNI networks, with techniques designed to evade detection and maintain persistent access. For CNI operators, this creates a threat that defensive tools alone may not adequately address. ## The Ransomware Evolution Ransomware has evolved from opportunistic malware to targeted, professionally operated criminal enterprises. Modern ransomware operations include: - **Reconnaissance phases**: Attackers spend weeks or months understanding target networks before encryption - **Backup targeting**: Deliberate effort to identify and destroy or encrypt backup systems before triggering main payloads - **Double and triple extortion**: Combining encryption with data theft and threats of public disclosure or regulatory notification - **Affiliate models**: Ransomware-as-a-Service operations that enable skilled attackers to use proven tools For CNI operators, ransomware represents an existential operational risk. The Colonial Pipeline attack in the United States demonstrated how ransomware can force [critical infrastructure](/control-for-critical-infrastructure) offline, with cascading effects across supply chains and dependent services. ## Supply Chain Vulnerabilities The interconnected nature of modern infrastructure creates supply chain risks that extend beyond direct organisational control. The SolarWinds compromise demonstrated how a trusted software provider could become a vector for widespread intrusion. Supply chain risks for CNI include: 1. Software dependencies with vulnerabilities inherited from upstream providers 2. Managed service provider access that creates pathways into client networks 3. Hardware supply chain integrity concerns for critical components 4. Contractor and third-party access that extends the attack surface The NCSC emphasises supply chain security in its guidance, recognising that organisational boundaries no longer define the limits of cyber risk. ## The Case for Physical Disconnection Against this threat landscape, traditional security models face fundamental challenges. If state actors can maintain undetected access for months, if ransomware operators specifically target backup infrastructure, and if supply chain compromises can bypass perimeter controls, what protection is genuinely reliable? Physical disconnection addresses these challenges by removing critical assets from the threat landscape entirely: - State actors cannot access systems with no network interface - Ransomware cannot encrypt storage that is physically disconnected - Supply chain compromises cannot propagate to air-gapped systems This is not about abandoning other security controls. It is about recognising that for the most critical data and systems, network-based protection has inherent limitations that physical isolation addresses. ## Threat-Informed Architecture Effective CNI security requires threat-informed architecture, designing systems based on realistic assessment of adversary capabilities. Key principles include: - **Assume breach**: Design systems expecting that network compromise will occur - **Protect crown jewels**: Identify and implement enhanced protection for the most critical assets - **Limit blast radius**: Architect systems to contain compromise and prevent lateral movement to critical functions - **Ensure recovery**: Maintain recovery capabilities that survive sophisticated attacks Firevault enables this architecture by providing the physical disconnection layer that protects assets from network-based threats regardless of their sophistication. ## Looking Forward The threat landscape will continue to evolve. Artificial intelligence will enable more sophisticated attacks. Quantum computing may eventually threaten current cryptographic protections. New vulnerabilities will emerge in systems currently considered secure. But one principle will remain constant: physical disconnection provides protection that network-based controls cannot match. For CNI operators, building physical isolation into security architecture now creates resilience that will remain effective regardless of how threats evolve. ## Conclusion Understanding the threat landscape is the foundation of effective defence. For UK CNI operators, that landscape includes state actors, ransomware enterprises, and supply chain risks that challenge traditional security assumptions. Physical disconnection through [Offline Secure Storage](/offline-secure-storage) addresses these threats at an architectural level, providing protection that survives even sophisticated, persistent adversaries. About the author ![Mark Fermor](/assets/mark-fermor-aWtKNSv7.jpg) ### Mark Fermor [](https://www.linkedin.com/in/mfermor) Director & Co-Founder Co-founder of Firevault, focused on offline secure storage and protecting individuals and businesses from fraud, fines, loss and damage. Speaker, owner and advisor. The Firevault view**Offline Secure Storage® keeps a clean copy beyond the reach of an attacker.**[Why #OSS →](/why-oss) Control systems and access**Cut the physical paths attackers and third parties depend on.**[Explore Control →](/solutions/control) Get started**Get started, or talk to a member of the team.**[Get started →](/get-started) How Firevault would handle this ## A recovery copy an attacker cannot reach Offline Secure Storage® keeps a clean copy of your data on hardware that is physically disconnected, so backup and recovery do not depend on systems an intruder can touch. [Get started](/get-started)[Talk to the team](/demo) **Hardware**Your copy sits on dedicated encrypted hardware **Disconnect**Offline by default, connected only when you say so **Recovery**A known-clean copy to rebuild from, on your timetable **Location**Held in a secure Firevault Bunker Keep reading ## You may also find these useful [Knowledge ### End-of-Life Technology: CNI Cyber Risk Nearly half of all network assets are ageing or obsolete. When technology can no longer be patched, it becomes a permanent open door for attackers. Physical disconnection addresses what patching cannot. ](/learn/knowledge/end-of-life-technology-cni-hidden-cyber-risk)[Knowledge ### NCSC CNI Guide: Severe Cyber Threats An authoritative guide aligned with NCSC recommendations for Critical National Infrastructure. How physical disconnection supports the four-objective framework for cyber resilience. ](/learn/knowledge/ncsc-cni-severe-cyber-threat-guide)[Knowledge ### Ransomware Protection: Offline Strategy Ransomware attacks have evolved from opportunistic to surgical. The only data attackers cannot encrypt is data they cannot reach. ](/learn/knowledge/ransomware-protection-offline-strategy) ![Mark Fermor](/assets/mark-fermor-aWtKNSv7.jpg) ![David Bailey](/assets/david-bailey-Dgqj8eaE.jpg) ![Kenny Phipps](/assets/kenny-phipps-CVyooRsR.jpg) Online Now Concierge ## Which offline secure storage solution is right for you? Answer a few quick questions and we will recommend the right solution, whether that is a personal vault or a scalable offline storage system built for your needs. Takes about 2 minutes. No account needed. Find Out Free 2 mins No sign-up