(Reuters) -Singapore's DBS Group said on Monday its data vendor Toppan Next Tech (TNT) had suffered a ransomware attack that potentially compromised customer statements of around 8,200 clients of the bank.

TNT prints customer statements and letters for DBS and the bank was informed about the ransomware attack on April 5.

DBS said preliminary investigations reveal that most of the affected data pertains to accounts of DBS Vickers, the bank's trading platform, with the rest relating mainly to cashline loan accounts.

The bank also said the potentially compromised statements and letters were mostly sent to individual customers between December 2024 and February 2025.

The data at risk includes the first and last names of customers, postal addresses, and details of equities held under DBS Vickers and cashline loans.

DBS also said their systems were not compromised and customer deposits and monies remain safe.

Separately, the Monetary Authority of Singapore (MAS) and Cyber Security Agency of Singapore (CSA) said the ransomware attack on TNT had led to customer information from DBS Bank and Bank of China Limited, Singapore branch, being extracted by the threat actor.

CSA said it was aiding TNT in the investigations, while MAS is in "close engagement" with the affected banks on their risk-mitigating measures and follow-up with customers.

(Reporting by Adwitiya Srivastava in Bengaluru; Editing by Devika Syamnath)

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