Google and Adobe voluntarily revealed in early 2010 that they had been breached by attackers out of China. Source close to Operation Aurora investigation tells Dark Reading that this brand of targeted attack has actually been going on for about three years against U.S. companies and government agencies. HBGary Federal and HBGary issued a statement to dispel misconceptions about the attacks, namely that the two companies are separate. Anonymous group infiltrated and dumped the contents of HBGary’s email messages and other sensitive information online, as well as commandeered HBGary CEO Aaron Barr’s Twitter account.”]
Source: https://www.darkreading.com/attacks-breaches/five-stories-over-five-years-that-shaped-security