Editor's note: In the eighth installment of our series, the moneylaundering.com legal team covers the role money mules have played in the growth of cybercrime. The number of cases in which teenagers in the United Kingdom have served as money mules—individuals whose bank accounts are used to move illicit funds for others—rose almost 75 percent in two years, from 3,360 in 2016 to more than 5,800 in 2018. A March 13 takedown by City of London Police found that a money-mule network of 460 foreign exchange students in the U.K. and former students who had returned to China had laundered...