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Cyberattack Halts IT at Fehmarnbelt Tunnel Consortium

Investigators are probing whether the breach affected construction data as they assess risks to costs or the 2029 timetable.

Overview

  • Femern Link Contractors reported its IT was disabled in a cyberincident that on Monday left electronic access cards, site computers and Wi‑Fi unusable and forced some workships to stand down.
  • Femern A/S confirmed it was informed by its contractor and said it is in contact with FLC while the consortium and authorities investigate the incident.
  • Project teams have moved key tasks to manual procedures on site and told staff not to use affected computers and networks to limit further disruption.
  • There is no confirmed evidence so far that attackers stole data, demanded ransom, or accessed construction or safety documents.
  • The outage underscores cyber risks for large cross‑border infrastructure projects and investigators will run forensic tests to determine scope, attribution and any impact on schedule or costs.