Bloops. Researchers have figured out how to crack 128-but UMTS 3G technology, thereby putting almost all modern phones in danger. The paper, found here basically describes a 2-hour process and is more a proof-of-concept than anything else. However, it could be used to listen to conversations after the fact.
As you’ll recall, old-fashioned G.S.M. was hacked a few weeks ago and with 3G down for the count there’s not much left to hide behind except good old security by obscurity. That said, I suggest we all learn Navaho like in Windtalkers.