# Solimut Mutuelle de France cyberattack > Live situation record from CLSTR: https://clstr.news/situations/solimut-mutuelle-de-france-cyberattack > Updated: 2026-08-24T17:57:02.000Z. Sources: 4. Developments: 2. Solimut Mutuelle de France confirmed it was the victim of a cyberattack detected on a Sunday morning. While the organization has isolated its systems and halted the intrusion, the full extent of the data breach remains under investigation. Although Solimut officially reports approximately 550,000 members, a hacker has claimed to have stolen data belonging to 1.2 million individuals. This discrepancy suggests the stolen files may include information from partner organizations or cross-referenced databases. The hacker claims to have exfiltrated sensitive information, including over 770,000 bank details (IBAN and BIC), approximately 1.08 million salary statements, and millions of postal addresses and identity histories. Solimut has notified the Autorité de contrôle prudentiel et de résolution and the Commission nationale de l’informatique et des libertés (CNIL). The mutual insurer has urged its members to remain highly vigilant against potential fraud, identity theft, and targeted phishing attempts via calls, emails, or messages appearing to come from the organization. ## Timeline ### 2026-08-24: Solimut Mutuelle de France hit by major cyberattack Solimut Mutuelle de France is investigating a cyberattack that may have exposed the bank details and salary data of over one million people, despite the insurer having only 550,000 official members. 4 sources. https://clstr.news/cluster/solimut-mutuelle-de-france-hit-by-major-cyberattack ### 2026-08-19: Mutuelle Générale de Prévoyance suffers major data breach A cyberattack on a service provider for Mutuelle Générale de Prévoyance has exposed the personal data and IBANs of nearly 200,000 members in France, raising significant risks of financial fraud. 2 sources. https://clstr.news/cluster/mutuelle-gnrale-de-prvoyance-suffers-major-data-breach --- Cite as: Solimut Mutuelle de France cyberattack. CLSTR, https://clstr.news/situations/solimut-mutuelle-de-france-cyberattack