NAVI MUMBAI, Nov. 14 -- Sensitive information linked to around 4,280 customers of a nationalised bank was allegedly stolen in a cyberattack on its data centre in CBD Belapur, with some of the compromised data subsequently circulated on the dark web, according to an FIR registered with the CBD police. The accused allegedly accessed the bank's servers between October 9 and 15, 2026, and extracted multiple confidential files. The stolen material included several large data files and 2,721 scanned documents, of which 658 were duplicates. The compromised records reportedly contained Personally Identifiable Information (PII), including personal details, loan applications, account-opening forms, contact numbers and residential addresses. In its complaint, the bank said it was assessing the extent of the breach, including whether other information had been accessed or further losses incurred. The police suspect that an individual or hacker group operating under the alias 'Siriusim', along with unidentified persons, was involved. The case was registered on November 12 under relevant provisions of the BNS and Information Technology Act. htc...