Worrying? The loophole that brings expired credit cards back to life
Researchers from the University of Massachusetts Amherst succeeded in making payments using expired credit cards after finding a vulnerability in the way contactless transactions are conducted. Using two smartphones, it is possible to change the…
Assessment
Researchers at the University of Massachusetts Amherst found a way to make payments with expired credit cards by exploiting a vulnerability in contactless transactions. Two smartphones can alter the expiration date sent from the card to the terminal. Visa cards were vulnerable in tests, but success depends on the issuing bank. The practical risk to consumers is unclear, but the finding exposes a flaw in how payment systems trust card data.