The U.S. remains the No. 1 target of "virtually every significant espionage service on the face of the Earth,” said the government’s top counterintelligence coordinator.
Joel Brenner, the new head of the Office of the National Counterintelligence Executive, told Bill Gertz of the Washington Times that China’s intelligence services pose a major problem for the U.S., followed by Cuban, Russian and Iranian spy agencies.
"These services are eating our lunch,” he declared.
China's intelligence activities have been "very aggressive" at acquiring U.S. advanced technology, often before it is fully developed here, he said.
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"The technology bleed to China, among others, is a very serious problem."
China also succeeded in thwarting U.S. intelligence efforts against China through Katrina Leung, a Los Angeles businesswoman who was a long-time FBI informant but was secretly working for Beijing, said Brenner, a former inspector general at the National Security Agency.
The Leung case was a "very serious espionage case," Brenner told Gertz.
Leung, through her lawyers, has denied spying for China. But Brenner maintained that China was in fact running Leung as their agent.
Leung was charged in 2003 with spying for China, but the charges were dropped and she pleaded guilty in 2005 to charges of making false statements and filing a false tax return.
Brenner noted that Cuban intelligence remains a "a very professional service.
"They were trained by the KGB, and now they're training the Venezuelans.”
Russia's intelligence service remains "very aggressive" against the U.S., and "the Iranians also have a mature and capable service," he said. All "are running significant operations against us."