Yet after three years of research, German cryptographer Karsten Nohl claims to have finally found encryption and software flaws that could affect millions of SIM cards, and open up another route on mobile phones for surveillance and fraud. Nohl, who will be presenting his findings at the Black Hat security conference in Las Vegas on July 31, says his is the first hack of its kind in a decade, and
![SIM Cards Have Finally Been Hacked, And The Flaw Could Affect Millions Of Phones](https://cdn-ak-scissors.b.st-hatena.com/image/square/35cdfca3db68906329cc66f86cca57f0602590b9/height=288;version=1;width=512/https%3A%2F%2Fimageio.forbes.com%2Fb-i-forbesimg%2Fthumbnails%2Fblog_1011%2Fpt_1011_9790_o.jpg%3Fformat%3Djpg%26height%3D900%26width%3D1600%26fit%3Dbounds)