Personal data of 150,000 ATG betting customers leaked on dark web

The personal details of more than 150,000 customers of Swedish betting operator ATG have been leaked on the dark web, according to an investigation by Dagens Nyheter (DN). The breach includes names, addresses, and thousands of national identification numbers, though ATG claims it has no knowledge of the incident.

A hacking group calling itself Coinbase Cartel has taken responsibility for the leak, which reportedly contains recent data from late last year. Among those affected are several high-profile individuals, including diplomats and Jimmie Åkesson, leader of the Sweden Democrats (SD). DN notes that no sensitive or classified information about Åkesson has surfaced in the leaked files.

Around 5,000 of the exposed records include national identification numbers, with roughly ten of those belonging to individuals with protected personal data status. ATG’s head of security, responding via email to DN, stated that the company was unaware of the breach: “Not this latest publication. We are aware that ATG has previously been listed on sites compiling various dark web leaks from different threat actors, but we have not received any evidence that an attack has succeeded.”

The method used to obtain the data remains unclear, and the breach has not been reported to Sweden’s Privacy Protection Authority. Affected individuals have also not been notified, DN reports.