“A German cryptographer says he has discovered encryption and software flaws in hundreds of millions of phones, leaving them vulnerable to attack, startling peers who had considered sim cards to be relatively safe technology. Karsten Nohl, 31, a respected hacker and specialist on phone security, said the vulnerability allowed outsiders to obtain a sim card’s digital key, a 56-digit sequence that exposes the chip to manipulation. ‘What this means is that your sim card can work against you. The hacker can redirect calls, rewrite numbers, listen in on calls.’ A criminal hacker, using an ordinary computer, could also commit payment fraud remotely controlling your phone.”
