: Once a card is verified as "live," it is used to buy high-value items, gift cards, or prepaid cards that can be easily resold for cash. The Impact on Businesses and Consumers

: Fraudsters obtain card data through phishing, skimming, or hacking databases.

: These checkers use bots to rapidly submit small, "invisible" transactions on e-commerce sites to confirm the card's validity without alerting the owner. How Carding Attacks Work

A is a script or software designed to test a list of credit card numbers to see if they are still active and have available funds.

: The stolen data is fed into a checker to filter out "dead" (canceled) cards from "live" ones.