Carding is an attack on an online store using someone else's gift cards or credit cards. One of the biggest breaches happened in August 2019, exposing over 100 million of card numbers. In 2019 alone, there were 4.1 billion of recorded breaches. The supply of verified card numbers is increasing, and carders are responsible for that. Websites, such as Cardingccshop, Cvvdumpsforsale and Cardmafiacc, can get and test unverified credit numbers In fact, they use bots to make small-dollar purchases in online stores. Valid cards are much more valuable and they can be sold on the black market.