The country's largest public sector bank, State Bank of India (SBI), on Wednesday informed the stock exchange that personal details of 3,897 customers were exposed on the dark web. The incident came to light after warnings from CERT-In on October 16. It is reported that names, mobile numbers and addresses of customers were leaked. SBI clarified that it has appointed an independent cyber security firm to conduct a thorough investigation into the incident and that there was no disruption to banking operations.