Chinese and Russian operatives are using “sex warfare” to seduce and spy on Silicon Valley professionals, industry insiders have told The Times. James Mulvenon, the chief intelligence officer of Pamir Consulting, which provides risk assessments for American companies investing in China, said he was one of the many men recently targeted by foreign seductresses hoping to gain access to US tech secrets. “I’m getting an enormous number of very sophisticated LinkedIn requests from the same type of attractive young Chinese woman,” said Mulvenon. “It really seems to have ramped up recently.” Mulvenon also described how, at a business conference on...