Prosecutors said the men made over $4-million by placing trades in at least five company stocks based on inside information from unnamed law firms, including about deals involving Intel Corp. and Pitney Bowes Inc. Prosecutors said the men made over $4-million by placing trades in at least five company stocks based on inside information from unnamed law firms, including about deals involving Intel Corp. and Pitney Bowes Inc. Three Chinese citizens have been criminally charged in the United States with trading on confidential corporate information obtained by hacking into networks and servers of law firms working on mergers, U.S. prosecutors said on Tuesday.