The defendants allegedly created and distributed the "Gozi" virus that had targeted the banking industry for several years beginning in 2005.

CNN: 3 indicted in 'Gozi' virus that stole bank information

In December, Mihai Paunescu, 28, was arrested in his native Romania, accused of enabling cybercriminals to distribute the Gozi virus and other malware.

CNN: 3 indicted in 'Gozi' virus that stole bank information