Dongfan "Greg" Chung is a Chinese-born former engineer for Boeing, who hoarded trade secrets about the U.S. space shuttle program with the intent to pass this information to China. He was arrested in 2006 after federal agents found sensitive documents in his home, along with journals detailing his communications with Chinese officials. Chung was convicted in 2010 of economic espionage and acting as an agent for China, sentenced to 15 years in prison.
(From: https://www.reuters.com/article/us-usa-china-spy/ex-boeing-engineer-gets-15-years-in-spy-case-idUSTRE6174XF20100208)
Trade Secret Theft, Industrial Espionage, and the China Threat by