French Tax Data Theft Using Stolen Staff Passwords Went Undetected for Seven Weeks

Reported by The Hacker News ([email protected] (The Hacker News))

Summary by Cyber Security News29 Sep 2026, 19:47 CET

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An attacker used stolen passwords of staff at France's tax administration to take tax data on hundreds of thousands of taxpayers and businesses in June and July. Neither the tax administration nor France's national cybersecurity agency saw the data leave. The attack was not sophisticated, the agency, ANSSI, says in a report (in French) published on Tuesday: it worked because of weak

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