Every GSM phone needs a SIM card, and you'd think such a ubiquitous standard would be immune to any hijack attempts. Evidently not, as Karsten Nohl of Security Research Labs -- who found a hole in GSM ...

Gemplus, the French smart card systems provider, is supplying North American-based Nextel Communications with subscriber identiy module (SIM) cards for the first non-GSM mass-market phone to use the ...

IBM researchers released a report last Tuesday showing that some cell phones' security cards could be cloned in minutes, letting hackers make calls and route charges to the cloning victim's account.

Conflict is brewing in the mobile world over the adoption of a new, smaller standard for the SIM card — the chip in each GSM phone that dictates which network you connect to and your cellphone number.

Wireless carriers sell you “postpaid” contract phones at a considerable discount. The carrier expects to recoup its outlay — the full price of the equipment — over the life of the contract that you ...