China experts and former intelligence officials are raising concerns about user data privacy following the acquisition of Grindr, the world’s largest gay dating application, by a Chinese technology firm. The Chinese government, they say, could be in a position to demand sensitive and embarrassing details on the lives of millions of non-Chinese citizens.This week, the Kunlun Group completed a full buyout of Grindr, a gay, bi, trans, and queer dating app that claims 3.3 million daily users. The Chinese firm bought 60 percent of the company in Jan. 2016 for $93 million and has now acquired the remaining stake for $152 million, according to stock filings. Grindr announced that Kunlun executives will take over leadership of the company.That announcement set off alarms among officials and experts that track Chinese intelligence and foreign influence operations in the United States. The Chinese government is sweeping up massive amounts of data on not only its own citizens, but also Americans and others, as part of a unique and well-planned effort to build files on foreigners for intelligence purposes.