Chinese hackers lurked in the U.S. Chamber of Commerce network for six months without being detected. The Chamber says it hasn’t discovered any harm done to its members as a result of the hack. It seems the attackers targeted information about specific individuals, according to a report in The Wall Street Journal. The attack of new ones may be ongoing, the report says. The hack lasted from November 2009 through May 2010 when it was shut down by disconnecting and destroying certain networked computers.”]