China and Russia are using cyber espionage to steal U.S. trade and technology secrets to bolster their own economic development, which poses a threat to U.S. prosperity and security, a U.S. intelligence report titled “Foreign Spies Stealing U.S. Economic Secrets in Cyberspace,” said. Intelligence services, private companies, academic institutions and citizens of dozens of countries target the United States, the report said. But it only named China and Russia. “Chinese actors are the world’s most active and persistent perpetrators of economic espionage,” the report said.