Ransomware Threats Disrupt UK Construction Sector Operations

The UK construction industry is facing a surge in ransomware attacks, causing an average of 24 days of operational downtime per incident. In 2025, the sector saw a 410% increase in Internet of Things (IoT) malware activity. The National Cyber Security Centre reported 204 major cyberattacks in the year leading to September 2025, with construction becoming the most frequently attacked industry. Cyber incidents threaten to derail entire construction projects, especially as firms adopt digital tools like Building Information Modelling (BIM). Insurers like QBE emphasize the need for construction firms to integrate cyber resilience into project planning. The European Union's NIS2 directive and the UK's proposed Cyber Security and Resilience Bill are increasing regulatory pressures on the sector. Despite these threats, many firms still treat cyber resilience as an IT issue rather than a project risk.

Key Points: • Ransomware attacks in the UK construction sector average 24 days of downtime per incident. • The construction industry has become the most frequently attacked sector, surpassing financial services. • Regulatory pressures are increasing with the EU's NIS2 directive and UK's Cyber Security and Resilience Bill.