Chinese hacked Obama, McCain campaigns, took internal documents, officials say

By Michael Isikoff
National investigative correspondent

The U.S. secretly traced a massive cyberespionage operation against the 2008 presidential campaigns of Barack Obama and John McCain to hacking  units backed by the People’s Republic of China, prompting  high level warnings to Chinese officials to stop such activities,  U.S. intelligence officials tell NBC News.

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“There’s been successful exfiltration of data from government agencies (by the Chinese) up and down Pennsylvania Avenue,” said Shawn Henry, who headed up the FBI’s probe of the 2008 attacks as the bureau’s chief of cyberinvestigations. 

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