AT&T Mobility's customer records affected by data breach
The carrier wouldn't say exactly how many of its customers were involved in the theft of customer information, but considering that AT&T has more than 100 million subscribers in the U.S., the number could be pretty high. The telecom giant made a filing in California related to the crime, which is required if more than 500 Californians are involved. AT&T hasn't commented on whether the customer information stolen, was limited to those living in the state.
The information stolen includes Social Security numbers and records of phone calls. AT&T believes that the breach was committed in order to unlock smartphones, which would allow them to be sold in the black market with support for AT&T, T-Mobile and various foreign mobile operators.
source: ITWorld, via PhoneScoop