Payment Village Card Hacking Challenge
Figure 1: A very pretty and shiny challenge coin received for solving the CTF, and 2/3 for the Card Hacking Challenge. My first ever! This year at DEF CON 31, there was the Payment Village which I decided to visit. Now, I’m not sure about you the reader, but I have never worked with payment systems prior to this, so this writeup/blog will be written from such a point of view....