The aspect of the present disclosure relates to a method (500) and a system (122) for detecting fraudulent transactions through payment card (102). The method (500) initiates with collecting and storing a set of data associated with card holding patterns of a card holder (106) using a smart chip (202) of the payment card (102). The set of data is transmitted from a smart chip (202) to a POS terminal (110) and forwarded to a payment processor (112). The payment processor (112) compares the set of data with historical data to identify a change in the card holding pattern when the payment card (102) is presented at the POS terminal (110).

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