They will need to switch browsers, clear their cache, use private or incognito mode, use virtual machines or device emulators, or use advanced fraud tools like FraudFox or MultiLogin.ĭevice fingerprinting can help identify browser and device parameters that remain the same between sessions, indicating the same entity is connecting again and again. Fraudsters or bots who are attempting credit card fraud need to make multiple attempts, and cannot change their device every time. The following techniques can help you safeguard your payment site against bad bots used in credit card cracking.įingerprinting is done by combining the user’s browser and device to understand who or what is connecting to the service.
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How to Protect Against Card Cracking Bots Multiple failed payment authorizations from the same user, IP address, user agent, session, device ID or fingerprint Unnaturally high shopping cart abandonment ratesĪn unnaturally high proportion of failed payment authorizationsĭisproportionate use of the payment step in the shopping cart Here are several pays payment websites can detect that carding bots are accessing their sites or other fraud techniques may be taking place: For a cyber thief, the beauty of stealing money from gift cards is that it is typically anonymous and untraceable once stolen.
This is a card cracking or token cracking attack. The crooks then used the validated gift card numbers to make purchases.
When a card balance was identified, instead of the usual error or zero, this meant the gift card number had real money associated with it. Nearly 1,000 eCommerce websites fell victim to this attack.Ĭriminals used this bot to enumerate through possible gift card account numbers, and automatically request the balance account of each card number. Hackers designed a malicious bot named GiftGhostBot to hack gift card balances. Successful card numbers are organized into a separate list and used for other criminal activity, or sold to organized crime rings.Ĭarding fraud often goes undetected by the cardholder until it is too late when their funds are spent or transferred without their consent. Each attempt tests a card number against a merchant’s payment processes to identify valid card details.Ĭredit card validation is attempted thousands of times until it yields validated credit card details. The attacker deploys a bot to perform small purchases on multiple payment sites. Forum users typically hide their identities.įorums are a source of credit card data for carding, and can also be used to share the results of carding – for example to sell success credit cards to other criminals.Ī carding attack typically follows these steps:Īn attacker obtains a list of stolen credit card numbers, either from a criminal marketplace or by compromising a website or payment channel. These forums are used by individuals who want to use stolen card information to illicitly purchase goods, or by criminal groups who seek to purchase credit card details in bulk to sell them on the dark web.Ĭarding forums are often hidden using TOR routing, and payments made for stolen credit card data are performed using cryptocurrency to avoid tracking by the authorities. Carding executed against a website can lead to poor merchant history and chargeback penalties.Ī carding forum or carding website is an illegal site used to share stolen credit card data, and discuss techniques for obtaining credit card data, validating it and using it for criminal activity. Every chargeback hurts a business’s reputation with credit card processors. Carding typically results in chargebacks – these are disputed transactions that result in a merchant reversing the transaction and refunding the purchaser’s money.Ĭhargebacks can happen for legitimate reasons (for example an erroneous purchase or a clerical error), but are very often the result of fraud techniques like carding.
The objective of carding is to identify which card numbers or details can be used to perform purchases.īesides the damage caused to card owners, a carding attack can negatively affect businesses whose websites are used to authorize stolen credit cards.
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Carding is performed by bots, software used to perform automated operations over the Internet. Carding (also known as credit card stuffing and card verification) is a web security threat in which attackers use multiple, parallel attempts to authorize stolen credit card credentials.
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