Happened this very day: A U.S. executive on a business trip to PRC sends emails to his colleagues from his Blackberry, with attached documents on important client business. The contents, though private, are not especially sensitive. The executive, however, once held important positions in national security, with continuing work in defense-related sectors—a source of delay in obtaining a visa for a perfectly normal business trip. For this reason, he did not take a laptop with him to China. After a few days, the emails he sent to his colleagues from China were deleted out of their servers on the East Coast.