A Ukrainian was arraigned in a U.S. federal court this week on charges for his alleged involvement in large-scale trafficking of compromised credit card data, along with money laundering, narcotics trafficking and other various computer crimes.
The U.S. Department of Homeland Security says Ukrainian Sergei Litvinenko pleaded not guilty Monday to the federal racketeering charges. He was extradited Friday from Croatia.
The charges stem from a U.S. Immigration and Customs Enforcement undercover probe called "Operation Open Market." The investigation started in March 2007 and targeted an organization known as "Carder.su," which operated a web portal where members could purchase the illicitly obtained data.
The web portal's forums were generally hosted within the former Soviet Union.
The Department of Homeland Security says Litvinenko is one of 39 defendants named in an indictment about the organization's alleged criminal acts in January 2012. Another 16 defendants linked to the scheme are charged in three other indictments.