What is transaction reversal fraud?
Transaction reversal fraud occurs when criminals manipulate ATMs, self-checkouts or payment systems to make a legitimate transaction appear to fail. Using techniques such as card swallowing, jamming or swapping during card ejection, they trigger errors like a failed dispense. The system then reverses the transaction and credits the funds back to the account, even though cash or goods were successfully dispensed. This exploits timing or logic gaps in the system and results in financial losses for banks or merchants who believe the customer never received the funds.