More than 73,000 French government employees were reportedly affected after DINUM said Tchap was breached through account hijacking on June 7, 2026. An unknown threat actor calling itself misere claimed the theft of account data and 13.5GB of files, but the exact cause and motivation remain unverified. #DINUM #Tchap #misere
Keypoints
- DINUM confirmed a breach of the Tchap government chat service.
- More than 73,000 user accounts were reportedly affected.
- Misere claimed theft of 13.5GB of files and hundreds of thousands of messages.
- The actor misere is unknown and cannot be verified from public evidence.
- The exposed data could support future spear-phishing against French ministries.