One leg of GSM encryption cracked, cell industry unimpressed

GSM is the most popular protocol for cellphone telephony on the planet, with billions of users worldwide. But the standard encryption procedure used by most GSM carriers is only 64-bit, and academic researchers had spotted flaws in it starting over a decade ago. Now, in an effort to get carriers to take security seriously, a researcher is publicizing a brute-force attack on the encryption that he expects will be combined with work on the GSM frequency selection algorithm to create a cheap and easy method for eavesdropping on cellular calls. Despite initial progress on the effort, the cellular industry remains unimpressed.