https://forum.defcon.org/ Payment technologies are an integral part of our lives, yet few of us know much about them. Have you ever wanted to learn how payments work? Do you know how criminals bypass security mechanisms on Point of Sales terminals, ATM’s and digital wallets? en Mon, 20 Apr 2026 11:16:18 GMT vBulletin 60 https://forum.defcon.org/images/misc/rss.png https://forum.defcon.org/