Networking: Not-so-secret documents

Last fall a controversy erupted when the details of the assassination of former Lebanese Prime Minister Rafik Hariri were revealed in a United Nations report -- after a cunning reader spotted a "track changes" mistake in the layout of the document. That political controversy is one of the latest tempests to emerge over "metadata," or data about data, contained in Microsoft Word and Adobe PDF documents, easily accessible by millions of readers over public networks like the Internet, experts tell United Press International's Networking.