Cyber security for construction
Cyber security that turns up at the site, not just the head office
Construction businesses spend most of their working life outside the office. Phones, tablets, sub-contractor laptops and patchy site connectivity all expand the threat surface. Good security in construction protects the supply chain story, the mobilisation rhythm and the tier-one relationships at the same time.
Looking at the bigger picture across IT support, cyber, AI and digital transformation? See the full construction technology overview.
Why it matters
Cyber security in construction is operational, regulatory and commercial all at once
Tier-one contractors are increasingly asking for Cyber Essentials Plus evidence before they'll award work. A weak posture is now a commercial issue, not just a risk issue. The supply chain is where most attacks land.
Documents are the business. A misdirected drawing, a phished site manager or an exposed CDE folder doesn't just cost time, it costs JCT-grade arguments. Identity, mobile and document hygiene are central, not background.
The threat shape
What attacks on construction businesses actually look like
Supply chain phishing and impersonation
Attackers impersonate sub-contractors, suppliers and QSs to redirect payments or extract drawings.
Lost and unmanaged mobile devices
Phones and tablets get dropped, stolen and shared. Unmanaged devices with access to the CDE are a leak waiting to happen.
Stale access from subbies and joiners
Project teams expand and contract. Access that lingers after a project ends is the most common dormant exposure.
Patchy site connectivity and shadow IT
When the official tools are slow, teams improvise with personal accounts and unsanctioned cloud. That's where data leaks.
Non-negotiables
What effective cyber security for construction looks like in practice
Cyber Essentials Plus kept current
Renewals and gap remediation handled in advance, so a tier-one asking for evidence is a non-event.
Mobile device management as a baseline
Intune-managed phones and tablets, conditional access, lost-device wipe and clean offboarding for subbies and leavers.
Identity tightened across the firm
MFA everywhere, conditional access for high-risk roles, and a real story for shared devices in the cabin.
CDE and SharePoint governed, not just licensed
Matter-style structures, retention, audit trails and a working joiner-leaver flow for project access.
What good looks like
A partner who has secured construction firms before saves you the first 12 months of learning
A construction-aware security partner mobilises a new site with security baked in, gets the mobile estate properly managed, and keeps the Cyber Essentials Plus renewal off the operations director's plate.
They'll have an opinion on the CDE, they'll handle the subbie joiner-leaver rhythm, and they'll brief site managers on what BEC and supplier impersonation actually look like before one lands.
Outcomes you should expect
- Cyber Essentials and Plus evidence kept current
- Mobile estate managed, secure and recoverable
- Supplier and project joiner-leaver tightened
- Site managers and head office trained for the attacks they actually see
Tell us how many sites and phones you run and which CDE you use. We'll match you with a UK partner that already secures construction firms.
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