“One of the victims is itemBay, the nation’s largest trading site for online games. Last October, Seoul police concluded that hackers located in China’s Jilin Province waged attacks on the firm’s website for two years from 2008 at the request of its Korean rival. The case is only the tip of the iceberg. There are many companies that have refused to report their cases to the police or refer them to the media, fearing that revelations could have a negative effect on their business. “
Source: Hired online attackers