The case of a Chinese businessman charged with illegally shipping missile guidance technology to China’s military has intensified concerns about foreign espionage in Silicon Valley. Qing Chang Jiang, who will be arraigned on Thursday, is at least the fourth Chinese native indicted since October on charges involving the shipment of equipment or trade secrets to China from the nerve center of the U.S. technology industry. Prosecutors worry Jiang may have been illegally exporting technology to China since 1998, when he bought one of the world’s fastest computers from a federal weapons lab. Although it never left the United States, the sale was a major embarrassment for Sandia National Laboratories. Officials acknowledged it was an act of “enormous stupidity.” Full Story