A credit card security code is a three or four digit number located on the back of most major credit and debit cards to help protect individuals when they are buying items online.
The security code located on the back of the cards help validate and confirm if the person buying a product through the internet actually has possession of the credit or debit card and to see if the account is not false.
Whenever you shop online you will notice that in order to complete your transaction you are required to enter the security code before you make your purchases so that the company can confirm you are the rightful owner of the credit or debit card.
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