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Trial Begins in Lyon Over Adecco Data Breach as Court Refuses Mastermind’s Release

A former intern is accused of selling login credentials that enabled hackers to siphon personal data from more than 72,000 workers in a multi-million-euro scheme

La complicité interne d’un jeune salarié avait permis aux escrocs de récupérer les identités et coordonnées bancaires des intérimaires, contenues dans l’immense base de données de la société suisse.
L'ancien alternant d'Adecco (à droite), qui avait vendu ses codes pour pénétrer la base de données de son employeur, le 16 juin au tribunal judiciaire de Lyon.
Ouverture du procès de piratage massif des donnée d'Adecco, à Lyon, le 16 juin 2025
Ouverture du procès de piratage massif des donnée d'Adecco, à Lyon, le 16 juin 2025

Overview

  • The court denied 22-year-old Timothée Lhomond’s request for release, citing an obvious flight risk and threats against witnesses
  • Fourteen defendants face charges including organized fraud, money laundering and use of false documents, carrying sentences of up to ten years
  • Investigators say a 19-year-old intern in the Doubs region handed over his Adecco login details in June 2022 in exchange for a promised payment that never materialized
  • Stolen data fueled unauthorized bank withdrawals just under €49.85 and financed bogus subsidy, voucher and insurance claims, driving loss estimates above €6 million
  • More than 2,400 parties civiles have joined the case alongside over 70,000 identified victims, including individuals, banks, insurers and public bodies