Europe’s Largest Gym Chain Says Data Breach Impacts 1 Million Members

Basic-Fit, Europe’s largest gym and fitness chain, has disclosed a data breach affecting the personal information of roughly 1 million members. In a press release published on Monday, the Netherlands-based company said it recently detected unauthorized access to systems.  While the intrusion was blocked within minutes, an investigation revealed that data belonging to active members in several countries had been downloaded by the hacker. Compromised information includes names, email addresses, physical addresses, phone numbers, dates of birth, and bank account details.  “Basic-Fit does not hold identification documents of members and no passwords were accessed,” the gym chain said in a statement.  Basic-Fit, which has over 5 million members and 1,500 clubs across Europe, said in its press release that roughly 200,000 members from the Netherlands are affected.  However, it has told SecurityWeek that a total of approximately 1 million members are affected, including in Spain, Germany, France, Belgium, and Luxembourg. It’s unclear who is behind the attack. No known ransomware group has taken credit for the hack and the company said it’s not aware of the data being leaked or misused.  *updated with direct confirmation from Basic-Fit to SecurityWeek of the number of impacted individuals Related: Nightclub Giant RCI Hospitality Reports Data Breach Related: Booking.com Says Hackers Accessed User Information Related: 300,000 People Impacted by Eurail Data Breach WRITTEN BY Eduard Kovacs Eduard Kovacs (@EduardKovacs) is senior managing editor at SecurityWeek. He worked as a high school IT teacher before starting a career in journalism in 2011. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering. More from Eduard Kovacs OpenAI Impacted by North Korea-Linked Axios Supply Chain Hack International Operation Targets Multimillion-Dollar Crypto Theft Schemes CPUID Hacked to Serve Trojanized CPU-Z and HWMonitor Downloads Adobe Patches Reader Zero-Day Exploited for Months Chrome 147 Patches 60 Vulnerabilities, Including Two Critical Flaws Worth $86,000 Microsoft Finds Vulnerability Exposing Millions of Android Crypto Wallet Users Apple Intelligence AI Guardrails Bypassed in New Attack Adobe Reader Zero-Day Exploited for Months: Researcher Latest News ‘Mythos-Ready’ Security: CSA Urges CISOs to Prepare for Accelerated AI Threats SAP Patches Critical ABAP Vulnerability Triad Nexus Evades Sanctions to Fuel Cybercrime Google Adds Rust DNS Parser to Pixel Phones for Better Security Nightclub Giant RCI Hospitality Reports Data Breach Organizations Warned of Exploited Windows, Adobe Acrobat Vulnerabilities Booking.com Says Hackers Accessed User Information BrowserGate: Claims of LinkedIn ‘Spying’ Clash With Security Research Findings Trending Webinar: A Step-By-Step Approach To AI Governance April 28, 2026 With "Shadow AI" usage becoming prevalent in organizations, learn how to balance the need for rapid experimentation with the rigorous controls required for enterprise-grade deployment. Register Virtual Event: Threat Detection And Incident Response Summit May 20, 2026 Delve into big-picture strategies to reduce attack surfaces, improve patch management, conduct post-incident forensics, and tools and tricks needed in a modern organization. Register People on the Move The United States Department of War appointed David Vaughn as Technical Advisor for Data Infrastructure. Black Duck has named Dom Glavach as Chief Information Security Officer. Finite State has named Ann Miller as Vice President of Marketing. More People On The Move Expert Insights The Hidden ROI Of Visibility: Better Decisions, Better Behavior, Better Security Beyond monitoring and compliance, visibility acts as a powerful deterrent, shaping user behavior, improving collaboration, and enabling more accurate, data-driven security decisions. (Joshua Goldfarb) The New Rules Of Engagement: Matching Agentic Attack Speed The cybersecurity response to AI-enabled nation-state threats cannot be incremental. It must be architectural. (Nadir Izrael) The Next Cybersecurity Crisis Isn’t Breaches—It’s Data You Can’t Trust Data integrity shouldn’t be seen only through the prism of a technical concern but also as a leadership issue. (Steve Durbin) Why Agentic AI Systems Need Better Governance – Lessons From OpenClaw Agentic AI platforms are shifting from passive recommendation tools to autonomous action-takers with real system access, (Etay Maor) The Human IOC: Why Security Professionals Struggle With Social Vetting Applying SOC-level rigor to the rumors, politics, and 'human intel' can make or break a security team. (Joshua Goldfarb) Flipboard Reddit Whatsapp Email