An obscure American company named Devumi ... has collected millions of dollars in a shadowy global marketplace for social media fraud. Devumi sells Twitter followers and retweets to celebrities, businesses and anyone who wants to appear more popular or exert influence online. Drawing on an estimated stock of at least 3.5 million automated accounts, each sold many times over, the company has provided customers with more than 200 million Twitter followers. The accounts that most resemble real people ... reveal a kind of large-scale social identity theft. At least 55,000 of the accounts use the names, profile pictures, hometowns and other personal details of real Twitter users, including minors. Fake accounts, deployed by governments, criminals and entrepreneurs, now infest social media networks. As many as 48 million of Twitter's reported active users ... are automated accounts designed to simulate real people. In November, Facebook disclosed ... that it had at least twice as many fake users as it previously estimated. Up to 60 million automated accounts may roam the world's largest social media platform. Devumi has more than 200,000 customers, including reality television stars, professional athletes, comedians, TED speakers, pastors and models. Devumi's fake followers also serve as phantom foot soldiers in political battles online. Devumi's customers include both avid supporters and fervent critics of President Trump, and both liberal cable pundits and a reporter at the alt-right bastion Breitbart.