How a French radio station kept hidden files on listeners

By Lou Syrah

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Unbeknown to the outside world, for nearly 20 years the privately-owned French radio station Europe 1 kept files on listeners who called its switchboard, sometimes recording details relating to their origin, their health or their presumed sexuality. France's data watchdog the Commission Nationale de l'Informatique et des Libertés (CNIL) discovered the scale of the scandal in 2017 but chose not to make it public. However, Mediapart has seen a copy of the confidential report on the issue.