Privacy of 3.5 Billion Cellphone Users Compromised – GSM Code is Broken | ProgrammerFish - well, that's it for GSM, eavesdropping made easy. As the article correctly states: there should have been updates to the encryption of GSM a long time ago, it's simply negligence in the design of the technology that updates to the encryption were not planned from the outset. It will be interesting to see when this becomes a bigger issue and telecom companies are forced to take action.