Building Resilience: How Cyber Threats Are Reshaping UK Construction
Why UK construction firms must treat cyber threats as seriously as hard hats and steel—to defend against ransomware, protect projects, and build digital resilience.
The UK construction industry is facing an unprecedented wave of cyber threats. Once considered a low-priority target for cybercriminals, firms across the architecture, engineering, and construction (AEC) sectors are now increasingly vulnerable to ransomware attacks, data breaches, and digital sabotage.
A March 2024 report by ReliaQuest noted a significant increase in cyberattacks on construction firms, with a 41% year-on-year rise in listed ransomware victims from the sector globally. This surge includes over 480 construction organisations being listed on ransomware data-leak sites in 2024.
Why Hackers Target Builders
The construction sector’s growing reliance on digital tools like Building Information Modelling (BIM), cloud project management systems, and IoT devices has expanded its cyber-attack surface. Threat actors are exploiting vulnerabilities in these interconnected systems, often through weak supply chain links or poor credential management.
According to the 2023 IBM Cost of a Data Breach Report, industrial sectors including construction experienced the steepest annual increase in breach costs, rising by $830,000 year-on-year.
Key Findings from Late 2024 (Source: ReliaQuest)
These findings underscore the urgency of implementing strong cyber hygiene across all levels of the construction supply chain.
83% of surveyed construction and real estate firms suffered ransomware incidents (ReliaQuest).
56% of victims reported paying a ransom, one of the highest across industries (ReliaQuest).
75% of security alerts in the sector involved exposed credentials (ReliaQuest).
The UK’s National Cyber Security Centre (NCSC) has warned that ransomware is the most acute cyber threat facing UK businesses. In her keynote speech at Chatham House in October 2021, NCSC CEO Lindy Cameron stated:
"Ransomware remains the most immediate danger to UK businesses and one that we expect will continue to be so for the foreseeable future."
More Than Data: The Real-World Fallout
In February 2022, the UK’s National Cyber Security Centre (NCSC) published dedicated guidance for construction businesses, reflecting the growing complexity and cyber vulnerability of the sector. The document was issued in partnership with the Chartered Institute of Building (CIOB) and marked one of the first sector-specific cyber advisories of its kind.
In a joint foreword to the NCSC’s 2022 guidance for the construction sector, CIOB Chief Executive Caroline Gumble and NCSC Deputy Director for Economy and Society Sarah Lyons wrote:
"Cyber security is a key consideration at every stage of the construction process, from initial design to the finished built asset... the health and wellbeing of people may also be at risk."
Common Threat Actors Targeting UK AEC
The NCSC’s 2022 guide "Cyber Security for Construction Businesses" outlines the main threat actors targeting the UK sector:
Ransomware gangs: LockBit, BlackCat (ALPHV), Clop
Credential harvesters: Often targeting accounts for lateral phishing
Hacktivists: Disruptive actors opposing infrastructure or policy
State-sponsored attackers: Seeking access via weak third-party links
The guidance warns that organisations may be targeted even if they are not the primary objective:
"Perhaps you work with larger organisations (or on government projects) who are their main target." – NCSC
Raising the Bar: What Good Cyber Safety Looks Like
The NCSC’s sector-specific guidance, developed in collaboration with CIOB and the Centre for the Protection of National Infrastructure (now NPSA), offers practical recommendations:
Back up data regularly and securely
Use endpoint protection and threat detection
Deploy multi-factor authentication
Train staff on phishing threats
Review supplier cyber policies
The UK government-backed Cyber Essentials scheme helps organisations implement five key controls to guard against common threats. According to the NCSC:
"Cyber Essentials will help to protect organisations against a range of the most common cyber attacks."
Meanwhile, ISO/IEC 27001 offers a broader framework for managing information security risk. In its guidance for suppliers, the NCSC encourages alignment with ISO standards to build resilience:
"Following good practices will also help you meet requirements such as Cyber Essentials and ISO/IEC 27001." – NCSC
Why Cyber Resilience Must Match Physical Safety
Construction sites enforce strict physical safety protocols — from PPE to fall protection — yet cyber safety often receives less attention.
Check Point Research’s 2025 Cyber Security Report reveals that while education, government, and healthcare remain the most heavily targeted sectors globally, both industrial manufacturing and construction continue to face rising threats. Construction & Engineering averaged 1,410 weekly attacks per organisation in 2024—part of a broader 44% year-on-year surge. The report warns that attackers are increasingly capitalising on misconfigured systems, unpatched software, and user-driven vulnerabilities—underscoring the need for improved digital hygiene across all infrastructure sectors
Resilience planning includes:
Testing incident response plans
Ensure offline procedures support your most critical business functions.
Training users in phishing defence, and awareness of common threats
Implementing supplier access controls
Ensuring your supply chain is resilient enough for your needs.
Opinion: Build It Secure or Risk Rebuilding
The AEC industry cannot afford to overlook cybersecurity. It is no longer optional — it’s operationally essential. As government contracts increasingly require certifications like Cyber Essentials or ISO 27001 or the forthcoming Defence Cyber Certification, compliance isn’t just a technical decision, it’s a commercial one.
The good news is that the UK’s cybersecurity ecosystem — from the NCSC to industry bodies — is investing heavily in awareness and readiness.
The bad news: cybercriminals are adapting faster than most construction firms.
"No organisation is immune from cyber threats, but putting the right controls in place can dramatically reduce your risk." – NCSC
Takeaway for UK Construction Leaders
✅ Get Cyber Essentials certified and request the same from suppliers
✅ Test and improve your incident response regularly
✅ Train your workforce in cyber safety
✅ Treat cyber risks like any other major business risk
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