Eurofiber France reportedly hit by data breach
Reports suggest major French institutions may have been affected, and some data has allegedly appeared on the dark web for sale.
Eurofiber France has suffered a data breach affecting its internal ticket management system and ATE customer portal, reportedly discovered on 13 November. The incident allegedly involved unauthorised access via a software vulnerability, with the full extent still unclear.
Sources indicate that approximately 3,600 customers could be affected, including major French companies and public institutions. Reports suggest that some of the allegedly stolen data, ranging from documents to cloud configurations, may have appeared on the dark web for sale.
Eurofiber has emphasised that Dutch operations are not affected.
The company moved quickly to secure affected systems, increasing monitoring and collaborating with cybersecurity specialists to investigate the incident. The French privacy regulator, CNIL, has been informed, and Eurofiber states that it will continue to update customers as the investigation progresses.
Founded in 2000, Eurofiber provides fibre optic infrastructure across the Netherlands, Belgium, France, and Germany. Primarily owned by Antin Infrastructure Partners and partially by Dutch pension fund PGGM, the company remains operational while assessing the impact of the breach.
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