CharlyFoxtrot writes "The geeks over on the fail0verflow blog took apart an AT&T Microcell device which is 'essentially a small cell-tower in a box, which shuttles your calls and data back to the AT&T mothership over your home broadband connection.' They soon uncovered some real security issues including a backdoor : 'We believe that this backdoor is NOT meant to be globally accessible. It is probably only intended to be used over the IPSEC tunnel which the picoChip SoC creates.