This attack also ensue in cyber-terrorist get personal data . affect customer were inform via SMS and recommend them to assert or alter their PIN for extra protective covering in their T - Mobile business relationship . No data point on the flak itself has been exhaust and it is not acknowledge how many consumer have been moved . The Federal Communications Commission ( FCC ) is consequently need to notify the mortal regard . The telecommunication company has account the incidental to sureness . These score may preserve nominate , bill speech , telephone set figure , describe amount , and info about mobile design and characteristic of client ( e.g. whether they are exploitation an outside telephone hollo sport ) . late , the company ground unauthorised admittance to certain prepay Mobile accounting . T - Mobile arrogate that the incident was not have-to doe with any fiscal selective information , mixer certificate issue , or watchword ( such as payment wit data point ) . This utmost piece of entropy is customer - owned meshwork info ( CPNI ) in compliance with US law of nature . The incidental was divulge around one yr after T - Mobile foretell that it had stand a data severance that wedged over two million customer . Since T - Mobile manage , even so , suffer 1000000 of prepay customer , fifty-fifty a low pct of dupe could be significant .