An international law enforcement team has arrested a Chinese national and disrupted a major botnet that officials say he ran for nearly a decade. Officials say that Yunhe Wang sold access to the 19 million Windows computers he hijacked worldwide to criminals who used that access to commit a staggering array of crimes. The U.S. Department of Justice quoted FBI director Christopher Wray as saying that the botnet with a network of malware-infected computers in nearly 200 countries was likely the world's largest. I'm Lisa Dwyer.