State Bank of India on Wednesday disclosed a cyberattack involving 3,897 customer records containing personally identifiable information which has reportedly
been found on the dark web. In a statement to the exchanges, SBI said "on 16 October 2026, the Bank received communications from its Threat Intelligence Service Provider, the Defence Cyber Agency, and CERT-In regarding an alert concerning the suspected exposure of the Bank’s customer data on the dark web. During the preliminary analysis of approximately 375,000 records available on the dark web, 3,897 customer records containing Personally Identifiable Information (PII) were identified. The exposed information reportedly included customers’ registered mobile numbers, dates of birth, names, gender, email addresses, residential addresses, branch and CIF identifiers, lead IDs, and metadata associated with loan/lead records and other related files." However as far as the initial probe and the extent to which data has been exposed, SBI said "a detailed investigation was required to establish the authenticity and completeness of the exposed data, determine the potential source and extent of the exposure, and assess the associated risks to customers and the Bank. The Bank promptly activated its cyber incident response and containment protocols. Additionally, an independent CERT-In-empanelled cybersecurity agency was engaged to conduct a comprehensive assessment and investigate the nature and extent of the alleged compromise. We wish to submit that this does not have any material impact on Bank’s Core business operations, financial performance or business continuity. The Bank’s core business functions continue to operate normally without disruptions. A detailed assessment is currently underway and appropriate remedial and preventive measures are being implemented as required. We reassure that the Bank continues to monitor the situation closely and take all appropriate measures in accordance with applicable regulatory requirements." SBI said the data leak is not expected to have any material impact on its core business operations, financial performance or business continuity. However, analysts remain concerned about the potential implications for customer data security, cybersecurity controls and reputational risks.
