French tax authority says break-in exposed data of 600K, including some private messages

France's tax authority (DGFiP) confirmed a data breach impacting roughly 600,000 individuals and professionals, exposing tax identification numbers, contact and household financial details, cadastral data, and—for about 250 people—the contents of messages exchanged with the authority; some business SIREN numbers were also exposed. DGFiP is notifying affected parties, flagged likely follow-on phishing and impersonation attempts, suspended a vulnerable Vacant Successions Portal pending investigation, and this incident is reported alongside several other recent French public-sector breaches.