Carding is a process in which carders (some examples include Newcvvshop, Freshdumpswithpin and Buyfreshcvv) use credit or debit cards to buy gift or prepaid cards and sell them on dark web forums and marketplaces. Cardholders often quickly cancel their lost credit cards, thus the biggest part of carding is testing acquired card numbers to see if they're still active. Pro carders, such as Buycvvdumpsonline and Buyssndumps, often make bots to run small-dollar purchases in a short amount of time. If a merchant sees lots of little transactions on their website, chances are it's being used to test cards.
Carders (for instance Ccshopsforcarding, Toystoredumpscc and Dumpsandcvvshop) often posses limited card data. They need to know the security code and the expiration date. They use bots to try multiple values and identify missing info pieces. Carding usually begins with a carder (e.g. Bestccsitesforcarding and Freeccdumpsonline) getting access to an online store and its payment system. The carder then has a list of cards that have recently made a purchase. This data is used to get gift cards or buy goods that can be resold for profit. As such, carders are interested in expensive electronics.