What are the different methods for gathering intelligence? How were humint, sigint and other types of intelligence used by Edward Snowden? How have intelligence gathering techniques evolved? Intelligence gathering techniques are the different methods for collecting information about people. Three common types of intelligence: HUMINT, SIGINT, and LOVEINT. Learn more about the different intelligence gathering techniques and who uses them in Permanent Record: HUMINT (CIA); SIGINT (NSA); LOVEINT (personal use).
Intelligence Gathering Techniques: HUMINT & More










