What is Lack of knowledge?     The Lack of knowledge  is become a quick affair. It is a simplified   payment  option being operated by National Payments   Corporation of India (NPCI), allowing you to instantly   transfer money between any two bank accounts   using a PIN. Now, while this mode of transfer is   convenient and easy, there are certain downsides to it   that can put you in helpless situations.     Lack of knowledge and accidental transfers are the   main reasons why users get tricked into these frauds.   Please ensure you DO NOT fall for such scams. Such   people might contact you through:     Calls:     Calls are the most common form of UPI frauds, since   there's a direct contact, giving the fraudster full   control of the victim's account. These fraudsters may   sometimes even pose as government officials to   scam people     SMS:     Suspicious activity   alert! Unknown   transactions have   been made on   your debit card.   Please share your   UPI ID, UPI PIN ...