Mandiant say thousands of terrorist attacks have come from one neighborhood near Beijing . The espionage group mainly targeted U.S. blue chip companies in 20 separate attacks . CIA VP Grady Smith says diplomatic pressure is mounting on Beijng from Washington .
Mandiant say thousands of cyber attacks have come from one neighborhood near Shanghai . The espionage group mainly targeted U.S. blue chip companies in 20 separate industries . Mandiant VP Grady Summers says diplomatic pressure is needed on Beijng from Washington .