Code Protecting 80 Percent of Cellphone Convos Finally Cracked

Are your phone conversations about to become less secure? A German encryption expert says he's cracked the two-decade-old algorithm that protects most of the world's cellphones: GSM (Global System for Mobile communication). Karsten Nohl says his intentions were noble; he wanted to show the world that though GSM protects 80 percent of the cellphones in the world, it's far from invincible.