Payment interruption is a defensive action used to stop a suspicious transfer before it is completed. It can mean pausing, blocking, or reversing a transaction while banks, payment processors, or law enforcement verify whether it is legitimate. The goal is to intervene during the narrow decision window before funds are withdrawn, converted, or sent onward.
In cyber security, payment interruption matters because many fraud schemes rely on speed. Once stolen money is cashed out or layered through multiple accounts, recovery becomes much harder. Defenders use this tactic in phishing, business email compromise, account takeover, and other fraud cases where a payment request looks abnormal. Effective interruption depends on rapid detection, clear escalation, and coordinated action across financial institutions, because even a short delay can let the money disappear.