Albert Gonzalez, a onetime star informant for the US Secret Service, pleaded guilty Tuesday to conspiracy charges in the largest known identity theft case to date. He stands to be sentenced to more than 15 years behind bars at hearing scheduled for March.

Mr Gonzalez formally entered the plea in US District Court in Boston in a case brought over the penetration of multiple retail chains and Heartland Payment Systems, a credit card and debit card processor that prosecutors said coughed up more than 130m records. Read more