From zdnet.com

A 30-year-old Moldovan man pleaded guilty on Friday for creating FastPOS, a strain of malware designed to infect computers processing payment card data from Point-of-Sale (POS) systems.
Valerian Chiochiu, known in the hacking world as “Onassis” (after the Greek shipping magnate who married Jacqueline Kennedy), was part of the Infraud criminal organization.