The RBI held a meeting with senior officials from select banks, the National Payment Corporation of India (NPCI) and card network operators to review the steps taken by various agencies to contain the adverse fall-out of certain card details alleged to have been compromised.
The apex bank said it came to its notice on September 8 that details of certain cards issued by some banks had been possibly compromised at ATMs linked to the ATM Switch of one of the service providers.
It further said the "number of cards misused, as per currently available information, is few".
As a matter of abundant precaution, card network operators concerned were earlier advised to share the details of cards used during the period of such exposure, it said.
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Several public and private sector banks have recalled or blocked over 32 lakh debit cards to safeguard their customers from any financial fraud.
The Finance Ministry has asked various agencies, including the RBI to submit their report in 10 days.
The RBI said that banks have taken measures including advising the customers to change PIN, blocking payments at international locations, reducing the withdrawal limits, monitoring unusual patterns, replacing the cards and re-crediting the accounts of cardholders for amounts wrongly debited.
The central bank also said it is a "good practice" to change the PIN and passwords periodically and advised customers not to share them with anyone for any reason.
Banks do not ask for card or account details from their customers, hence, customers should exercise caution and not reveal such information to any person on phone or email, it said.
It has emphasised on an early implementation of this framework so that possibility of such incidents happening in future is minimised and in the event of such incidents, containment measures are taken immediately.
As many as 32.14 lakh debit cards of various public and private sector banks are feared to have been 'compromised' by cyber malware attack in some ATM systems.
Several banks, including state-owned SBI, have recalled a number of cards while many others blocked the ones suspected to have been compromised and asked their customers to change PIN (personal identification number) before use.
According to the NPCI, as many as 641 customers across 19 banks have been duped of Rs 1.3 crore using stolen debit card data.