U.S. government cables reveal new evidence that China is behind many of these attacks. The Chinese military has been launching massive numbers of spear-phishing attacks, they say. The volume of attacks is such that “we have given up on the idea we can keep our networks pristine,” a former cyber-security official says. The most notable of those attacks was arguably Operation Aurora, which targeted Google and some 33 other companies. These attacks have reportedly stolen terabytes of data, including government login IDs, passwords and blueprints for sensitive military systems.”]