Cyberattack on Belgian Jims Fitness Chain Exposes Data of 150,000 Members A cyberattack on Belgian fitness chain Jims has compromised the personal data of approximately 150,000 members, far exceeding initial estimates. The breach, which occurred between July 13 and 20, targeted the company’s member and customer management system, affecting 31 of its 85 clubs across Belgium. The stolen data includes names, addresses, dates of birth, email addresses, membership details, and in some cases, account numbers. While passwords and health data were not accessed, the exposed information is now being sold on the dark web. Parent company Colruyt Group has warned members about potential phishing attempts, as fraudsters may use the leaked data to impersonate the company via email, text, or phone. Colruyt Group reported the incident to the Belgian Data Protection Authority within legal deadlines and filed a police complaint. In response, Jims has reset affected accounts, strengthened security measures, and blocked fraudulent domains. The company has expressed regret over the breach and emphasized efforts to mitigate further risks. The incident highlights the growing threat of cyberattacks targeting customer data, with stolen information frequently exploited for fraudulent activities.