A cyberattack on France’s tax authority exposed personal data linked to about 678,000 taxpayers, including information on thousands of high-income individuals.
France’s Finance Ministry confirmed the breach after hackers accessed systems at the General Directorate of Public Finances. FrenchBreaches estimates that 678,437 people were affected, including nearly 27,000 who reported income above €100,000 and 386 earning more than €1 million.
Stolen Data Raises Security Concerns
The leaked records reportedly include names, birthdates, addresses, phone numbers and email addresses. A database matching the information has also reportedly appeared for sale online, although authorities have not confirmed whether it came from the attack.
Related: Hackers Access Over 13,000 Trezor Users’ Data by Breaching Third-Party Shipping Company
Authorities are still assessing how many taxpayers were affected and what data was taken. The information could give criminals new ways to target victims with scams or identity theft.
Crypto Holders Face Added Risks
The breach comes as France deals with a rise in violent attacks targeting crypto investors. Chainalysis recorded 30 such incidents in the first half of 2026, causing more than $30 million in losses.
“More bad news for Bitcoiners living in the leading country for wrench attacks,” Jameson Lopp wrote.
French authorities have also recorded 77 verified crypto-linked kidnapping and extortion cases since January, compared with 45 for all of 2025. The leaked tax data could give criminals another source of information for identifying wealthy crypto holders, although no link to such attacks has been established.
Related: Binance Blocks 16 Crypto Platforms as EU Russia Sanctions Tighten
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