Mark M. Lowenthalhas thirty-six years of experience as an intelligence official in the executive and legislative branches of government and in the private sector. He has served in the Congressional Research Service, the State Department, the House Intelligence Committee as staff director, and the CIA, where he served as the assistant director of central intelligence for analysis and production, and also as vice chairman for evaluation on the National Intelligence Council. He is now the President and CEO of the Intelligence & Security Academy.

Robert M. Clark is an independent consultant performing space systems threat analyses for the US Intelligence Community. He is also a faculty member of the Intelligence and Security Academy and a professor of intelligence studies at the University of Maryland University College.

Chapter 1: Introduction
Some Important Definitions
References
Chapter 2: Open Source Intelligence - Eliot A. Jardines
Defining Open Source Intelligence
History of OSINT
How OSINT Is Managed
Who Produces OSINT?
International OSINT
Private Sector OSINT
Types of Targets OSINT Works Best Against
Future Trends in OSINT
References
Chapter 3: HUMINT - Michael Althoff
What It Is
History
How HUMINT is Managed
Foreign Collectors of HUMINT
Best Targets
Future Trends
References
Chapter 4: Signals Intelligence: Continuing Evolution - William N. Nolte
SIGINT: The Cryptologic Base
From Morse Code to the First World War
The First World War
The Continued Evolution of SIGINT: The Interwar Years
The Evolution of SIGINT: The Second World War
SIGINT in the Cold War
SIGINT: An Assessment
The Information Revolutions and SIGINT: Computers, the Internet, and Cyber
References
Chapter 5: GEOINT - Darryl Murdock and Robert M. Clark
GEOINT Defined
A History of GEOINT
GEOINT's Main Attributes or Components
How GEOINT is Managed
International GEOINT
The Types of Intelligence Targets Against Which it Works Best
References
Chapter 6: MASINT - John L. Morris and Robert M. Clark
Introduction
MASINT Defined
A History of MASINT
MASINT's Main Sub-elements or Components
How MASINT is Managed
International MASINT
The Types of Intelligence Targets Against Which MASINT Works Best
References
Chapter 7: Managing Collection
References