Mandiant say thousands of cyber attacks have come from one neighborhood near Shanghai . Virginia-based Mandiant published a 60-page report detailing allegations over a six-year period against a group of hackers -- known as Comment Crew -- which Summers linked to a secret division of the Chinese military . The espionage group mainly targeted U.S. blue chip companies in 20 separate industries . China has denied the allegations and said it is a victim of cyberattacks.
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 . China has denied the allegations and said it is a victim of cyberattacks.