HDFC Bank Ltd.

HDFC Bank, country's largest credit card issuer is in process to replace some points of sale machines at merchant establishments due to skimming frauds. In these skimming frauds, the card data is copied illegally in an otherwise legitimate transaction, only to be used fraudulently later.

The bank is one of the largest players in the merchant acquisition space as well, with close to 2.5 lakh machines. It has over 6.4 million cards in circulation with an outstanding portfolio of Rs 10,000 crore and 35% market share.