In Romania, one Mafia-guy made over 40 companies with fake names or with the names of poor people that were forced to take part in his scam. He scammed other people of tens of thousands of Euros and even bought a pretty well known Romanian football club in an anonymous manner. In total it is thought that this guy scammed people and the country of millions of Euros. (source)
Overall Romanian crime gangs are responsible for 75% of the human trafficking in Europe. (source)