The GSM technology used by the majority of the world’s mobile phones will get some scrutiny at this week’s Black Hat security conference, and what the security researchers there have to say isn’t pretty. On Friday, an open source group released software that cracks the A5/1 encryption algorithm used by some GSM networks. Called Kraken, [...]

Following a recent crack of the simpler A5/1 standard, researchers at the Weizmann Institute of Science say they have cracked the A5/3 security cipher (nicknamed Kasumi) by using what’s known as a “sandwich” attack. The group accomplished its goal by creating a distinguishing trait for the key and using just four related keys to determine [...]