Silicon Valley steps up screening on Chinese employees to counter espionage

Washington — Leading U.S. technology companies reportedly have increased security screening of employees and job applicants, which experts say is necessary to counter the cyber espionage threat from China. While the enhanced screening is being applied to employees and applicants of all races, those with family or other ties to China are thought to be particularly vulnerable to pressure from the Beijing government. But at least one Chinese computer science graduate student at a U.S. university is hoping to make his ties to China an asset. Zheng, who does not want to reveal his first name for fear of retaliation frommore