| IBM Research has discovered a new vulnerability in Subscriber Identification Module (SIM) cards, used in Global System for Mobile Communications (GSM) digital cell phones, and has developed technologies to protect them from hacker attacks. SIM cards typically store secret cryptographic keys which are used to identify users and protect their communications and transactions. Hackers who can learn the keys in your cell phone's SIM card can "become you" and make phone calls and do business transactions on your behalf. |