A Florida man and two unnamed co-conspirators were charged Monday with hacking into major commercial computer networks and stealing data for more than 130 million credit and debit cards, the largest data theft ever charged in the U.S.

Prosecutors alleged that Albert Gonzalez, 28, of Miami and two unnamed computer hackers in Russia stole the data by penetrating computer networks that supported leading American retail and financial businesses.

Corporations allegedly victimized include Heartland Payment Systems Inc. (HPY), a New Jersey-based card payment processor; 7-Eleven Inc., a Texas-based nationwide convenience store chain; and Hannaford Brothers Co., a Maine-based supermarket chain.

Prosecutors also said two other unnamed corporations, both major national retailers, were hacked. Their identities were not released because investigations into those data breaches are ongoing, said a spokesman in the U.S. attorney's office in New Jersey.

Gonzalez, who was charged in a New Jersey federal court, has been in federal custody since last year and is facing other hacking charges in Boston and New York that could put him in prison for life.

He was charged last year in Boston with hacking into the computer systems of several major retailers, including TJX Cos. (TJX), BJ's Wholesale Club Inc. (BJ), OfficeMax Inc. (OMX), Boston Market, Barnes & Noble Inc. (BKS), Sports Authority Inc. (TSA) and DSW Inc. (DSW).

That theft allegedly netted more than 40 million credit and debit card numbers. A trial is scheduled for 2010.

Gonzalez also was charged in New York last year with hacking into the computers of the Dave & Buster's restaurant chain, and a trial on those charges is scheduled to begin next month in Long Island.

He is currently being held at a detention center in Brooklyn. A lawyer for Gonzalez did not return a call for comment.

According to Monday's indictment, Gonzalez, also known as "segvec," "soupnazi" and "j4guar17," and his co-conspirators committed the theft from October 2006 to May 2008, and sent the data to computer servers they operated in California, Illinois, Latvia, the Netherlands and Ukraine.

Prosecutors alleged that the defendants used sophisticated techniques to cover their tracks and to avoid detection by the anti-virus software used by their victims. Michael Norton, a spokesman for Hannaford Supermarkets, said in a brief statement that the company was pleased that authorities aggressively pursued the case and were able to indict the alleged perpetrators.

Representatives for Heartland Payment Systems and 7-Eleven did not return calls for comment.

-By Brent Kendall, Dow Jones Newswires; 202-862-9222; brent.kendall@dowjones.com

(Kathy Shwiff contributed to this article.)