France Tax Agency Breach Exposes 678,000 Taxpayers' Data

France's Finance Ministry confirmed on August 14, 2026, that a cyberattack on the country's tax agency resulted in the theft of personal data belonging to hundreds of thousands of taxpayers. The breach, which occurred in late June, has raised significant concerns about the potential for increased violent crime targeting wealthy individuals, particularly those involved in cryptocurrency.

The ministry stated that a "malicious actor" gained unauthorized access to the systems of the Directorate General of Public Finances (DGFiP) in late June. The intrusion was detected and cut off during routine security checks at the end of that month. However, the attacker had already extracted data. The breach was publicly disclosed only after the attacker, using the moniker ZeroBytes, claimed responsibility on a criminal forum on August 12. The ministry confirmed the incident in a statement the following day.

According to FrenchBreaches, a platform that tracks cyberattacks in France, the stolen database contains records for approximately 678,000 people, including both individual and professional taxpayers. This figure has not been officially confirmed by the ministry, which said investigations...