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France’s tax authority admits hackers made off with data on 678,000 individuals

An attacker used stolen credentials and an MFA bypass to steal tax data on 678,000 individuals from France's tax authority DGFiP.

France's General Directorate of Public Finances (DGFiP) disclosed that intrusions into its portals exposed tax data, including reference tax income, family quotient, withholding tax rate, and business identifiers such as company name and SIREN number, on 678,000 individuals and professionals. An attacker using the alias 'ZeroBytes' claimed credit on a cybercrime forum and offered a stolen database for sale, claiming the portal contains data on roughly 20 million citizens. DGFiP suspended the affected accounts, notified the CNIL, and is working with ANSSI and the finance ministry's security office; it said the main online tax portals and their login credentials were not compromised.

Help Net Security · Aug 17, 2026Data breach

Week in review: Records allegedly stolen from Azure tenants, Medusa ransomware hits 500+ orgs

Week in review: Medusa ransomware hit 500+ orgs per CISA, millions of Azure tenant records allegedly stolen, SafePal and French tax authority breaches disclosed.

Help Net Security's weekly roundup covers the FBI, CISA, and HHS joint advisory update reporting Medusa ransomware has breached more than 500 organizations since June 2021, and threat actor TheHatman's claim of millions of employee records stolen from Azure tenants of Fortune 500 firms including McDonald's, Vodafone, Kyndryl, and Tata Consultancy Services, per Hudson Rock. It also covers the SafePal breach affecting 39,798 customers, France's DGFiP breach exposing data on 678,000 individuals, and UT San delaying its fall semester after a cyberattack. Security items include critical unauthenticated GitLab flaw CVE-2026-19478, an actively exploited patched macOS Screen Sharing flaw deploying a cryptominer, US charges against 17 Mabna Institute Iranian hackers over 31TB of stolen academic data, and Google Mandiant's AI agents finding 100+ high-severity vulnerabilities.

Help Net Security · 25d agoData breach in the wildCVE-2026-19478

France investigates tax authority breach after hacker claims 600,000 victims

France's tax authority DGFiP confirmed hackers extracted data on individuals and businesses; a hacker claims more than 600,000 victims.

France's Economy Ministry said an attacker gained unauthorized access to DGFiP systems in late June by stealing or misusing someone's identity, viewed and extracted data, and was cut off after detection. A hacker using the alias ZeroBytes claimed via FrenchBreaches to have taken data on over 600,000 people, including names, tax identification numbers, emails, family circumstances and tax status; the claim is unverified. The DGFiP will notify affected individuals, report to France's data protection authority and file a criminal complaint. It follows other 2026 breaches at ANTS, the Education Ministry and the National Bank Accounts File.

The Record · Aug 14, 2026Data breach in the wild