Most physical security planning for data centers focuses on operational facilities, guarding against break-ins or drone incursions once a site is live. But according to a recent analysis, the period of greatest exposure often comes earlier, during construction, when sites are porous, contractor populations are large and constantly changing, and high-value equipment sits exposed before it’s ever secured behind operational controls.
Risks Unique to the Build Phase
Construction sites face a distinct set of threats. Material theft is common on open or lightly controlled sites, with copper, cabling, generators, and networking gear all attractive targets that can cause both financial loss and project delays. In markets where communities oppose data center development, sites can also see increased vandalism or deliberate sabotage.
More covert risks include the planting of spy devices, such as rogue wireless access points or hidden sensors, intended to provide backdoor access once the facility goes live. Supply chains are vulnerable too: tampered shipments, swapped components, or counterfeit gear can introduce backdoors or reliability problems before a facility ever opens. Hobbyist drones add another layer of risk, potentially exposing site layouts or creating safety hazards.
Layered Defenses for Construction Sites
Recommended practices include building a strong physical perimeter with controlled ingress and egress, staffed gates, temporary professional-grade surveillance cameras, CPTED-informed lighting, and motion or thermal sensors. Vetting contractors and delivery personnel, requiring visible badges, and using zoned access so workers only reach areas relevant to their tasks can further reduce risk.
Phased access, bringing contractors on site in smaller groups rather than all at once, can make unusual activity easier to spot, though it may slow construction timelines. Roping off or caging high-value storage areas adds another layer of protection against theft.
Supply chain hardening is also critical: vetting vendors for chain-of-custody controls and tamper-evident packaging, recording serial numbers and MAC addresses upon receipt, and using barcodes or RFID to track equipment movement. For drone threats, detection tools paired with coordination with local authorities are advised, since active interdiction is often illegal.
Verify Before Commissioning
Before a facility goes live, teams should validate installed assets against purchase orders and approved bills of materials, and conduct technical sweeps for unauthorized wireless signals or unexpected network endpoints. These checks can catch devices that were covertly installed during the build phase.
No set of controls can eliminate construction-phase risk entirely, much as no defense fully prevents cyberattacks. But a layered approach across the physical site and the supply chain significantly reduces the likelihood and impact of intrusions, while improving the odds of catching and remediating issues before operations begin.