One of the things frequently for sale by carders is the dump, which is data electronically copied to the magnetic stripe on the back of the card. In the credit card world, this data is known as "full-track-data", which means two data tracks (Track 1 and Track 2). Track 1 contains cardholder's name and account number. Track 2 has the secure code, account number, discretionary institution data and expiration date. Websites, such as Bestccshop, Cvvshoponline and Buydumpswithpin, offer data that contain both Tracks. Carders also refer to PINs and BINs when selling and buying dumps.

Carding is an automated bot attack on an ecommerce store. Carders, such as Fullzforsale and Dumpswithpinshop, use various techniques to test card numbers against different payment processes to get valid card info. There are carding forums and websites (e.g. Dumpsshoponline and Cardingdumps) that share card numbers. Over time, when one forum gets shut down, carders turn to another. These forums often have strict invitation rules, and organizers can identify security researchers. Carders usually aim at countries where most people use credit cards, with the US being one of the biggest markets.