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Fitness chain Basic-Fit: 200,000 members affected by data leak

Fitness chain Basic-Fit: 200,000 members affected by data leak

Heise.De • April 13, 2026

Unauthorized access to the data of the listed fitness chain Basic-Fit affects members in several countries, with 200,000 from the Netherlands alone. It was stopped shortly after its discovery on April 13 and reported to the authorities.

Personal data such as email address, name, and member information fell into the wrong hands through the data leak. According to the company, unauthorized individuals did not have access to passwords and identification documents.

Basic-Fit informed the affected customers by email, according to its statements, and assures that no data misuse has been proven so far. However, the fitness chain advises its members to be particularly vigilant phishing attempts. It has also created its own FAQ page where customers can find information the data leak.

According to its statements, Basic-Fit operates 2150 fitness studios in twelve European countries. It has almost six million members.

For example, in a phishing attack, they can impersonate Basic-Fit with fake emails and demand supposedly unpaid membership fees or other information. In case of suspected phishing, it is important not to respond and not to click on any links.

Fitness apps and studios are frequently affected by data leaks. For example, there was a massive data breach at the sports provider “Urban Sports Club”, where thousands of sensitive files were stored in a publicly accessible cloud storage. Hackers stole 150 million user data from the nutrition app “MyFitnessPal”.

This article was originally published in German . It was translated with technical assistance and editorially reviewed before publication.

Extracted Entities

Attack Types (2)

Countries (1)

MITRE ATT&CK (1)