The March 28, 2009, New York Times has a headline which reads Vast Spy System Loots Computers in 103 Countries. The article, written by John Markoff, describes how a Canadian research group uncovered a China-based electronic spying operation created to steal information from hundreds of government computers.
Here is a link to the just-released 53-page report titled Tracking GhostNet: Investigating a Cyber Espionage Network.