The alleged mastermind behind the major data breaches at TJX Cos. Inc. and Heartland Payment Systems Inc. has pleaded guilty to some of the charges against him.

Albert Gonzalez pleaded guilty Friday in Massachusetts, where TJX is based, to 20 counts of conspiracy, computer fraud, wire fraud and other charges for his role in the breaches at TJX, Dave & Buster's Inc. and some other companies, according to an announcement from the Department of Justice.

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