Hack on French medical site sees over 15 million records leaked, including private health info

• Cyberattack targeted French healthcare software provider
• Patient administrative data and limited doctor notes exfiltrated
• Company confirmed breach and notified authorities

French software company Cegedim Santé, which builds solutions for the healthcare industry, has confirmed it was hit with a cyberattack which saw it lose sensitive data on thousands of people.

In a press release, the company said that in late 2025, it spotted “abnormal application request behavior” on the accounts of doctors using the MonLogicielMedical (MLM) product.

MonLogicielMedical is a web-based management application designed to help healthcare professionals manage their everyday administrative and clinical tasks online. It lets users access and update patient records, schedules, prescriptions, billing, and other practice data from any browser or mobile device.

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