CVV Checker – Real-time card verification via zero-dollar bank auth

CVV Checker is a website that provides a tool for verifying stolen credit card data. It claims to check whether a card number, expiration date, and CVV are still valid by running a real-time authorization attempt for $0.00 against the issuing bank's systems. This type of service is used by fraudsters to test card-not-present (CNP) credentials before using them for purchases or selling them on illicit markets. Legitimate cardholders and merchants do not need such a tool — standard payment gateways already handle real-time verification during transactions. The site's existence highlights the ongoing cat-and-mouse game between payment network fraud detection systems and organized carding operations.