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Fraud Doesn’t Take a Holiday: Beware of Card Testing

By Anne Heraghty

If your organization accepts payments from a payment gateway or eCommerce site, you may be exposed to a new form of fraud called card testing. Unfortunately, there is no fail-safe system to protect against it, but your close attention to daily batch and authorization details will go a long way in alerting you of a possible problem.

Fraudsters obtain credit card information from a variety of sources. To know which cards have not yet been reported stolen and can be successfully highjacked, they must test the data. The process involves creating an account to test the credit card numbers until a valid one is found. The program then finds the corresponding expiration date that would allow for a valid transaction.

With card testing, fraudsters don’t care about an organization’s product or service; they are simply focused on testing the card number. Charities are frequent targets because most are donation based, and fraudsters know the amount and frequency of donations can vary, making their testing attempts less obvious. Sadly, prime time for fraudsters to slide these transaction tests through is during the hectic holiday season.

Fraudsters test hundreds, even thousands of combinations to get a match that will allow them to use a given card. Because a merchant’s gateway charges for every attempted authorization—whether it has been approved or not— this testing process could end up costing you a bundle in fees.

Is there any way to tell if this is happening at your site? Here are a few things to look for:

  • Many authorization attempts in a short time frame
  • A strand of tests where card brands rapidly switch - from Visa to MasterCard back to Visa, etc.
  • Notices that authorizations have FAILED – not “Partial Matches” or “Review” but FAILED
Preventative measures include the following:
  • Collect AVS (address verification system) and CVV (3-digit code on back of the card) data on your authorization file/gateway settings.
  • Enhancements to your gateway/internet shopping card can block IP addresses, block/limit authorization attempts and set other velocity checks to reduce the likelihood of being targeted by authorization testing. Many of these enhancements are at no cost or minimal cost, depending on the gateway.
  • Ask your processor about additional security protocol you may need when accepting transactions in a card-not-present environment.
  • Alert your processor to any suspicious activity for immediate review. Once a transaction is settled, you would be liable for chargebacks associated with unauthorized charges.

Remember to routinely review your daily transactions. If you have questions or concerns, please call the Veracity support team. We want to help protect you against fraudulent activity.

About the author: Anne Heraghty (anne.heraghty@veracitypayments.com) is with the Communications Department of Veracity Payment Solutions (www.veracitypayments.com, 989-464-3229, 888-599-2209.), which offers payment technology and solutions to nonprofits and businesses worldwide.

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