A data breach at France's tax authority has exposed the personal information of over 678,000 individuals, including Bitcoin holders, raising security concerns.
Data Breach Overview
A serious data breach at France's tax agency has exposed the personal information of over 678,000 individuals and businesses, raising concerns for Bitcoin owners and affluent taxpayers.
The cyber incident, which took place in June, involved the theft of sensitive records, including income information, addresses, tax identification numbers, and family details. A hacker is reportedly attempting to sell this data for thousands of euros, according to FrenchBreaches, a cybersecurity outlet.
Details of the Breach
The compromised database contains records of 392,867 individuals and 285,570 professionals, with a notable number of high earners among them. Specifically, 26,805 individuals reported incomes exceeding $116,000, 386 had incomes above $1.16 million, and eight exceeded $11.6 million. The hacker gained access using stolen VPN credentials and an internal search tool, allowing them to extract extensive personal data.
Jameson Loop, Chief Security Officer at Casa, emphasized the severity of the situation on X, stating, "This is more bad news for Bitcoiners in a country notorious for wrench attacks." He highlighted the risks posed to Bitcoin holders, particularly given the recent rise in violent incidents targeting cryptocurrency owners.
Potential Risks for Individuals
The leaked information could facilitate targeted scams, as criminals may use the genuine tax data to craft convincing fraudulent messages. FrenchBreaches warned that scammers with access to such detailed information could create communications that appear legitimate, increasing the risk of phishing attempts and identity theft.
As investigations continue, the total number of affected individuals remains uncertain. The breach highlights the growing trend of cyberattacks targeting cryptocurrency holders, with recent reports indicating a spike in wrench attacks, particularly in France, where 33 incidents were recorded in just the first half of 2026.
