China's intelligence service gained access to a secret National Security Agency listening post in Hawaii through a Chinese-language translation service, according to U.S. intelligence officials. The spy penetration was discovered several years ago as part of a major counterintelligence probe by the Naval Criminal Investigative Service (NCIS) that revealed an extensive program by China's spy service to steal codes and other electronic intelligence secrets, and to recruit military and civilian personnel with access to them. According to officials who spoke on the condition of anonymity, China's Ministry of State Security, the main civilian spy service, carried out the operations by...