QinetiQ North America (QQ) a world leading defense technology and security company providing satellites, drones and software services to the U.S. Special Forces deployed in Afghanistan and Middle East. The hacking was so extensive that external consultants ended up working permanently inside the firm to root out malicious software and compromises on an ongoing basis. In one of the attacks, that took place in 2009, the hackers raided at least 151 machines of the firm’s Technology Solutions Group (TSG) over a 251-day period, stealing 20 gigabytes of data before being blocked.
Source: https://thehackernews.com/2013/05/chinese-hackers-steal-info-from-top.html