The FBI wanted poster looks like a yearbook page from a Russian provincial college. Seventeen men and women from Eastern Europe, mostly between the ages of 19 and 22, with bad skin, nerdy haircuts and no resemblance to your stereotypical bank robbers. But in the past two years, this ring of hackers was allegedly able to steal tens of millions of dollars from small businesses in the U.S. The arrests of 39 of their operatives in the U.S. last week is being touted by the FBI as one of the biggest busts in the history of cybercrime. The problem, though, is that the real masterminds are likely still pecking at their keyboards across Russia and Eastern Europe, and experts say there is little to stop them from regrouping, sending out another virus and pumping millions of dollars more out of American bank accounts. ...