The computer systems of the U.S. Chamber of Commerce, that represents the interest of US businesses and trade organizations, have been infiltrated by ""Hackers" (Crackers).
According to the The Wall Street Journal, the breach was discovered in May 2010 by the FBI, and the Chamber immediately hired private computer investigators to find out how it happened and what information was compromised.
They have also found evidence of the Hackers searching for financial and budget information contained in a variety of documents, including the email correspondence of four Chamber employees who worked on Asia policy, but they can't confirm that the documents have also been stolen - although they very likely have.