Debit, credit card details of 70 lakh Indians leaked on the dark web

"Data pertains to the period between 2010 and 2019, which could be very valuable to scammers and hackers. Since this is financial data, it is very valuable for hackers and scammers as they can use the personal contact details for phishing or other attacks," Rajaharia said. The leaked details, however, do not include card numbers.

The internet security researcher claims the data could have come from third-party service providers who are contracted by banks for selling of credit/debit cards. The leak also reveals the PAN numbers of about five lakh cardholders. However, the report says whether the data of 70 lakh users are genuine or not, the researcher who cross-checked the data of some users found many fields to be accurate. "I think someone sold this data/link on the dark web and later it became public. Financial data is the most expensive data on the Internet," said Rajaharia.