Nope it's not. The key is the only thing that prevents anyone on the street to decipher the frequency hop pattern of the network. Once that's deciphered then al

Nope it's not. The key is the only thing that prevents anyone on the street to decipher the frequency hop pattern of the network. Once that's deciphered then all you need is cheap equipment (as low as $1500) for the necessary hardware and GSM processing software to do the eavesdropping. It really is BIG news.