Santander has confirmed that hackers have stolen the banking data of approximately 30 million customers. The multinational bank has detected “unauthorised access” to a customer database.

Santander has apologised for “the concern this will understandably cause” and said it is “proactively contacting affected customers and employees directly.”

ShinyHunters, the hacking group that claimed to be behind a recent Ticketmaster breach, have taken responsibility for the hack.

The hackers have claimed to be in possession of 30 million bank account details, six million account numbers and balances, 28 million credit card numbers and the human resources information for all Santander staff.

“Following an investigation, we have now confirmed that certain information relating to customers of Santander Chile, Spain and Uruguay, as well as all current and some former Santander employees of the group had been accessed,” Santander said in a statement posted earlier this month.

“No transactional data, nor any credentials that would allow transactions to take place on accounts are contained in the database, including online banking details and passwords,” it added. 

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The news comes as following an alleged hack on Ticketmaster which may have resulted in the personal details of more than half a billion customers being stolen.

The hacking group, ShinyHunters, are demanding $500,000 in ransom to prevent the information being sold, the BBC reported. 

Australia’s Department of Home Affairs said it was “working with Ticketmaster to understand the incident”.

According to reports, 560 million global Ticketmaster customers have had their names, addresses, phone numbers and partial payment details accessed and stolen. 

Ticketmaster, which reported a market capitalisation of $18.23bn in 2023, has not yet commented on the hack.