A major cyberattack has halted construction of the road-and-rail tunnel under the Fehmarn Belt between Denmark and Germany by crippling systems used by the FLC consortium. Worker identification cards stopped functioning and key offshore equipment - vessels, cranes and platforms - became immobilized, bringing all on-site activity to a standstill. The consortium comprises roughly 2,800 employees from firms across Denmark, Germany, France, Belgium and the Netherlands, with a significant number of Polish workers among them. Investor company Sund & Baelt is in discussions with the contractor as teams work to restore access and functionality, but no perpetrator has been identified and no timetable for recovery has been announced.
Officials are examining whether the incident is linked to hybrid warfare; Henning Mortensen, head of Denmark’s Council for Digital Security, flagged that possibility amid recent national warnings about potential Russian cyber operations and a raised threat level. The tunnel project is an 18-kilometer immersed-tube structure assembled from 89 concrete elements transported and connected at sea using specialized digital software. Estimated cost is about €7 billion and an opening was targeted for 2029, though delays had already been anticipated and the cyberattack likely threatens further postponement.
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