A groundbreaking online-spying case unearths details that companies wish you didn’t know about how vital information slips away from them.
On a wall facing dozens of cubicles at the FBI office in Pittsburgh, five guys from Shanghai stare from “Wanted” posters. Wang Dong, Sun Kailiang, Wen Xinyu, Huang Zhenyu, and Gu Chunhui are, according to a federal indictment unsealed last year, agents of China’s People’s Liberation Army Unit 61398, who hacked into networks at American companies—U.S. Steel, Alcoa, Allegheny Technologies (ATI), Westinghouse—plus the biggest industrial labor union in North America, United Steelworkers, and the U.S. subsidiary of SolarWorld, a German solar-panel maker. Over several years, prosecutors say, the agents stole thousands of e-mails about business strategy, documents about unfair-trade cases some of the U.S. companies had filed against China, and even piping designs for nuclear power plants—all allegedly to benefit Chinese companies.