The Russian national that allegedly ran several carding forums and hacked into the compromised point-of-sale (PoS) systems of multiple retailers appeared for arraignment in US federal court and pleaded not guilty in front of the accusations.
Roman Valerevich Seleznev was indicted by a federal grand jury in Washington back in 2011, but the US Secret Service managed to arrest him only this year, in Maldives, in an operation seen as controversial by Moscow.
Then he was taken to Gu…