How I got a Root Shell on a Credit Card Terminal

Re:How I got a Root Shell on a Credit Card Terminal by account42 on Monday June 02, 2025 @09:32AM (#44158680)

Note that is for the merchant side, not for the customer side - my EU-issued card still has a working mag stripe (got a chance to verify that it works this year).

And on a tangent about confused customers - I wish where to tap was as obvious as where to swipe. It varies by reader and sometimes that contactless logo is hard to see.

[ Parent | on HN ]

Re:How I got a Root Shell on a Credit Card Terminal by mrngm on Tuesday June 03, 2025 @01:34PM (#44172499)

Not to mention the (usually mobile) terminal designs where only the merchant sees the amount entered, usually doesn't flip it to show it to the customer, and the customer needs to tap it on their side without first seeing the amount entered.

... such as this one: https://www.paxtechnology.com/a77

[ Parent | on HN ]