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Basic-Fit data breach exposes details of a million gym members

The company said bank details and contact information were stolen, but no passwords or identity documents were accessed.

  • Europe's largest budget fitness chain, Basic-Fit, disclosed a data breach affecting approximately 200,000 members in the Netherlands, with the company operating over 1,300 clubs across seven European countries.
  • Attackers targeted the chain's club check-in and visit-registration system, which logs member access through turnstiles, prompting the company to notify The Dutch Data Protection Authority.
  • The exposed dataset includes names, home addresses, email addresses, phone numbers, dates of birth, and IBAN bank account details, though Basic-Fit confirmed no passwords or identity documents were accessed.
  • Affected members should monitor their accounts closely and remain alert to phishing attempts that may exploit the leaked personal details to appear credible.
  • In February 2026, telecom operator Odido, formerly T-Mobile Netherlands, suffered a breach exposing approximately 6.2 million customer accounts, highlighting the scale of recent Dutch data incidents.
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The European leader in the sports halls, Basic-Fit, announced on Monday 13 April that he had suffered a major computer intrusion. According to the group's first statements to the AFP, which were transcribed in the world, the personal data of about 1 million members was compromised during this attack, including their bank details.The data leak affects all the strategic markets of the brand, namely France, Belgium, Germany, Spain, Luxembourg and t…

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The company detected access in minutes, but the attackers managed to download data such as banking and user contact information.

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Reuters broke the news in United Kingdom on Monday, April 13, 2026.
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