Carding is a process when someone else's card is used to obtain goods.
One Time Password
You might be thinking that the transaction can't take place because carders, including Creditcarddumpfree and Cvvdumpsfree, don't know One Time Password. Indeed, they only know card details. Carders, however, have their own ways to bypass OTP and there are many websites that don't ask for OTP. These websites only need your credentials. They usually use old encryption techniques.
You might be thinking where carders get card numbers. There are many sources, such as Buycvvonline and Ironcash24 that can provide you with this data.