 Gonzalez then returned to Miami.While cooperating with authorities, he was said to have masterminded the hacking of TJX Companies, in which 45.6 million credit and debit card numbers were stolen over an 18-month period ending in 2007, topping the 2005 breach of 40 million records at CardSystems Solutions.Gonzalez and 10 others sought targets while wardriving and seeking vulnerabilities in wireless networks along U.S. Route 1 in Miami.