French Tax System Hacked in June, Nearly 700,000 Affected

In late June 2026, the French Directorate General of Public Finances (DGFiP) was the target of a significant cyberattack, which compromised the personal and professional data of approximately 680,000 to 700,000 taxpayers. The Ministry of Economy and Finance confirmed the breach, describing it as illegitimate access to the tax information system.

According to official announcements, a malicious actor succeeded in impersonating an identity, allowing unauthorized consultation and extraction of sensitive information concerning both individuals and professionals. The incident, confirmed by the Ministry and reported by French cybersecurity monitors, like French Breaches, raises critical concerns about data security and privacy within France's fiscal infrastructure.

The attack was detected at the end of June, with the breach involving the illegal access and exploitation of the tax information platform. While the precise nature of the stolen data remains undetailed, this breach underscores the vulnerabilities faced by government platforms that process sensitive citizen data.

Authorities are continuing to investigate the extent and impact of this cyberattack, and measures are being evaluated to reinforce the security of the fiscal data system. The incident has prompted widespread concern among affected taxpayers about the safety of their personal and financial information stored by government agencies.

In statements, officials emphasized the gravity of the identity impersonation exploited by the hacker to circumvent security controls. The Ministry of Economy and Finance is working to address the breach and assure citizens of enhanced protective measures moving forward.

This event is emblematic of the growing cybersecurity challenges confronting France’s public administration, especially regarding safeguarding taxpayers' data amidst evolving cyber threats.