Gift Card Fraud is a category of fraud that exploits gift cards and their associated systems to steal value, launder money, or defraud consumers and businesses. Gift cards are attractive to criminals because they are effectively a cash equivalent that is easy to convert, resell, and transfer, while often being harder to trace and recover than credit-card transactions. In the API and web-security context, much gift card fraud is carried out through automated abuse of the systems that issue, store, and redeem gift-card balances.
One common technique is gift-card balance enumeration or “carding” of gift cards: attackers use bots to rapidly guess or test gift-card numbers and check their balances against a merchant’s balance-checking endpoint. Because gift-card numbers can sometimes be guessed or fall within predictable ranges, automated tools can discover active cards with real balances, which the attacker then drains before the legitimate owner can use them. This is a form of automated business-logic abuse targeting a specific, high-value workflow.
Other forms include using stolen credit cards to purchase gift cards (monetizing carded payment details into a harder-to-trace asset), account takeover to steal stored gift-card balances or loyalty value from victims’ accounts, social-engineering scams in which victims are tricked into buying gift cards and handing over the codes, and reselling fraudulently obtained cards. Many of these ultimately funnel through the redemption and balance systems that APIs expose.
The impact falls on multiple parties: consumers lose the value of stolen or drained cards, and merchants face financial losses, chargebacks, fraud-handling costs, and reputational damage, as well as the operational load of automated balance-checking traffic.
Because much of this fraud relies on automation against legitimate endpoints, defenses parallel bot management and business-logic protection: rate limiting and monitoring of balance-check and redemption endpoints, bot detection to stop enumeration, non-guessable gift-card number generation, velocity and anomaly checks, requiring additional verification for balance inquiries, and monitoring for abnormal patterns such as bursts of balance checks or high rates of invalid card numbers. Protecting the gift-card lifecycle end to end – issuance, storage, and redemption – is key to reducing this fraud.