WASHINGTON, March 26 /PRNewswire-USNewswire/ -- The leader of the largest hacking and identity theft ring ever prosecuted by the U.S.

The mastermind of one of the largest credit and debit card hacking schemes in American history has been sentenced to 20 years in prison.

Officials have closed the case on what they say may be the largest credit card theft case in US history after a 28-year-old Florida man pleaded guilty on Tuesday to hacking into corporate computer networks.

WASHINGTON, Dec.

A hacker involved in the largest credit card theft in US history pleaded guilty Friday to several charges of criminal activity and credit card fraud.