Cybersecurity Checklist for Construction Companies & Contractors
Construction is now among the most-attacked industries — not despite the muddy boots, but because of the money in motion: progress payments, supplier invoices, and payroll, coordinated over email between offices, trailers, and phones. Wire fraud built for exactly that workflow is the industry's #1 cyber loss.
The threats that actually hit construction companies
Payment-diversion fraud
Attackers compromise or spoof a sub, supplier, or GC email and redirect a progress payment. Six-figure diversions are routine, and recovery windows are measured in hours.
Ransomware on estimating and project files
Losing access to bids, drawings, and schedules stalls every active job — and bid deadlines don't wait for recovery.
Shared logins across field crews
One password on ten phones for the project management app means no accountability and no way to cut access when someone leaves mid-project.
How many of these boxes can you actually check?
Find out in 3 minutes. CyberGrade grades your security posture A+ through F and shows your top risks — free, no email required to start.
Get Your Free Security GradeThe checklist
1.Verify every banking change by phone at a previously known number
quick winPayment-diversion fraud beats companies that trust email; a 2-minute call beats a $200K loss.
2.Turn on MFA for email and project management platforms
quick winEmail compromise is step one of payment fraud; MFA removes step one.
3.Give every employee their own login — kill shared accounts
an afternoonIndividual accounts mean you can remove one departing foreman without re-keying the whole company.
4.Back up estimating, accounting, and project files daily off-site
an afternoonBids due Friday don't care that the server was encrypted Wednesday.
5.Separate accounting from the general office network
an afternoonThe machine running payments shouldn't share a network with the trailer laptop that opens every attachment.
6.Set spending/approval limits requiring dual sign-off on payments
quick winA second approver on payments over a threshold is the cheapest fraud control in existence.
7.Update or replace end-of-life devices in field offices
ongoingOld trailer PCs running unsupported Windows are unpatched entry points to everything else.
8.Brief PMs and bookkeepers on invoice-fraud red flags
quick winNew bank details, urgency, and 'confidential' requests — the people who move money need to know the pattern.
Frequently asked questions
Why would hackers target a construction company?
Money in motion. Construction moves large payments on predictable schedules between many parties over email — the exact conditions payment-diversion fraud exploits. Attackers read your project communications, learn the rhythm, then insert altered banking details at the right moment.
Do GCs require subs to have cybersecurity now?
Increasingly yes — larger GCs and public projects push security requirements downstream via contract, and cyber insurance questions appear in prequalification packages. A documented baseline is becoming a bidding asset.
What's the first thing a contractor should fix?
The banking-change call-back rule, today, for free. Then MFA on email. Those two controls address the loss pattern that actually bankrupts contractors — wire fraud — before touching anything technical.
How many of these boxes can you actually check?
Find out in 3 minutes. CyberGrade grades your security posture A+ through F and shows your top risks — free, no email required to start.
Get Your Free Security Grade