content: Hey, you seem to know about this. Years ago I saw a video of some guys analyzing SIM cards. They reverse engineered them and explained in quite detail how they work and I learned then that a SIM card is a computer in itself and the main OS has no way of knowing what it does. Then I read a rumor those guys god v& and that they "disappeared." Do you know what I'm talking about? Is it real? Any details to share?