Open Intelligence
Open intelligence is any source of intelligence that is readily available to the general public without restriction. Open intelligence sources include such things as newspaper reports, economic journals, television reporting and even bus and train timetables. Such sources of intelligence are often over looked but can provide vital clues to the state of a rival power or nation. In many countries such open sources are prone to distortion and propaganda but even distorted messages and political broadcasts can offer clues to the professional analyst.
How to cite this article: Dugdale-Pointon, T. (13 May 2003), Open Intelligence, http://www.historyofwar.org/articles/concepts_openint.html