Ransomware hit construction 41% harder last year. South Florida is not exempt.

Why Construction Is a High-Value Target

Ransomware groups don't pick targets at random. They go where the data has value and where defenses are thin. Construction checks both boxes.

Think about what lives on a typical GC's server: active bid documents with detailed cost breakdowns, subcontractor databases, lien waivers, pay applications, certified payroll records, and years of financial history in QuickBooks or Sage. That's not just operational data — it's competitive intelligence. A competitor or a foreign threat actor willing to pay for it, and ransomware groups know it. Stolen project files from a mid-size GC can fetch six figures on dark web marketplaces before a ransom is ever demanded.

Layer on top of that the structural reality of most construction firms: there's no dedicated IT department. The office manager handles software licenses. The estimator has had the same laptop password for four years. Field supervisors share credentials on shared tablets. Project managers use personal phones to access Procore. None of this is negligence — it's just how the industry operates. But it's exactly the attack surface ransomware operators target.

There's also a payment pressure dynamic that doesn't exist in other industries. When a manufacturing plant goes down, it hurts. When a construction firm's project management system goes down mid-project — with a draw coming, a city inspection scheduled, and 40 subcontractors waiting on RFI responses — the pressure to just pay and move on is intense. Attackers know this. They price ransoms accordingly.

What an Attack Actually Looks Like

The entry point is almost always an email. Not an obviously suspicious one — a realistic-looking invoice from what appears to be a familiar material supplier or subcontractor. "Please review the updated quote attached." Someone clicks it, a credential is harvested or a payload is dropped, and the clock starts.

Within hours, the encryption spreads. Project management files in Procore and Bluebeam become inaccessible. Sage 300 or QuickBooks data is locked. Email archives are encrypted or exfiltrated. By the time the office opens the next morning, field supervisors can't pull drawings, payroll can't process, and billing is frozen.

If you have immutable offsite backups tested recently, you're looking at a painful but survivable recovery — typically 24 to 72 hours depending on data volume and your recovery process. If you don't, you're making a business decision: pay the ransom (with no guarantee of full recovery and a high probability of being hit again within 90 days), or accept permanent data loss. Neither is good. One is survivable.

This is not a hypothetical. In early 2026, two construction firms — Williams Brothers Construction and Hendrick Construction — had their data posted publicly on ransomware group leak sites within the same week. Employee records. Financial statements. Project files. Posted for anyone to download.

South Florida's Specific Exposure

South Florida is in the middle of one of the most active construction cycles in its history. Residential towers, commercial redevelopment, airport and port infrastructure, highway expansion — billions of dollars in active projects, thousands of firms competing for work. That concentration of high-value project data in a dense geographic market is not invisible to ransomware groups. South Florida construction firms are appearing in leak site postings with increasing regularity.

The multi-firm project environment compounds the risk. On a large commercial project, you have a GC, a dozen specialty subs, design consultants, and an owner's rep — all sharing files, exchanging emails, and sometimes accessing shared platforms. One compromised laptop on a subcontractor's network can propagate to every firm it's connected to. You don't have to be the weak link to be the victim.

Five Controls That Stop Most Construction Ransomware

The good news: the controls that prevent the majority of ransomware attacks are not exotic. They're not expensive relative to the cost of an incident. They just require actually doing them.

1. Immutable cloud backup tested weekly. This is non-negotiable. Immutable means the backup can't be encrypted or deleted — even if an attacker has admin credentials. Veeam with offsite cloud replication is the standard. The "tested" part matters as much as the backup itself. If you haven't done a restore test in the last 30 days, you don't actually know if your backup works.

2. EDR on every device — including estimator laptops and field tablets. Antivirus is not enough. Endpoint Detection and Response (EDR) platforms like SentinelOne monitor process behavior in real time and can kill a ransomware payload before encryption spreads. Every device that touches your network needs it. Every device. The estimator's personal laptop that connects to the VPN is a device. The field tablet that logs into Procore is a device.

3. MFA on email and project management platforms. Stolen credentials are the most common initial access vector after phishing. Multi-factor authentication stops a stolen password from being enough. Enable it on Microsoft 365, Google Workspace, Procore, Sage, and any other platform that holds sensitive data. This is a one-day implementation that eliminates an entire class of attack.

4. Separate VLANs for field devices and office systems. Network segmentation limits lateral movement. If a field tablet is compromised, it should not have a direct path to the accounting server or the file server. VLANs create that boundary. This is a one-time network configuration change that significantly reduces the blast radius of any compromise.

5. Phishing simulation and training. Invoice and billing-themed phishing is the entry vector in over 80% of construction ransomware cases. Your team needs to see what these emails look like before a real one arrives. Monthly phishing simulations using construction-specific scenarios — supplier quotes, subcontractor invoices, change order approvals — build the pattern recognition that stops attacks at the click.

The First Conversation We Need to Have

You don't need a complete security overhaul to dramatically reduce your ransomware exposure. You need the fundamentals in place and verified. Start with backup. If your firm doesn't have immutable backup that's been tested in the last 30 days, that's the first call we need to have — before anything else.

A 30-minute conversation is enough to assess where you stand and what the actual gaps are. No generic sales pitch. A senior engineer reviewing your environment and giving you a straight answer.