WASHINGTON, April 8 (UPI) -- Russian and Chinese cyberspies have penetrated U.S. electric utility computer networks, inserting software that could disrupt power supplies, sources say.
An unnamed senior intelligence official says that while the motives of the cyberspies aren't well understood and no immediate danger has been presented, U.S. security experts are alarmed at the pervasiveness of the espionage and say it could be used against the country in a time of war, The Wall Street Journal reported Wednesday.