SCIENCE & TECH Cybersecurity

Cyberattack against Impots.gouv.fr: 678,000 taxpayers affected

Cyberattack against Impots.gouv.fr: 678,000 taxpayers affected
Cyberattack against Impots.gouv.fr: 678,000 taxpayers affected

The French tax website Impots.gouv.fr suffered a major breach at the end of June 2026. A hacker stole the tax data of 678,437 taxpayers, including 393,000 individuals and 286,000 businesses. The French tax authority, the Directorate General of Public Finances, confirmed the cyberattack on August 13, several weeks after it occurred. The file containing this highly sensitive information is now reportedly being offered for sale for several thousand euros on specialized forums.

Tax data put up for sale

The Ministry of the Economy officially acknowledged this massive data breach less than 24 hours after the attack was publicly claimed on online discussion forums frequented by cybercriminals. A sample of the stolen data was published, revealing the particularly sensitive nature of the compromised information. The scale of this breach raises serious questions about the security of the French tax administration's information systems.

The authorities have not yet specified what concrete measures will be offered to the victims of this intrusion. The timeline of events raises questions about the detection and communication delays surrounding this cyberattack, which affects several hundred thousand French citizens.

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