intelligence-gathering by interception of signals

intelligence alliance comprising Australia, Canada, New Zealand, the United Kingdom and the United States

collection, analysis, and exploitation of information in support of law enforcement, national security, military, and foreign policy objectives

theory, method, and practice of producing military capability

Information about the weapons and technological capabilities of a foreign adversary

academic Field

clandestine acquisition of confidential information

government agency responsible for the collection, analysis or exploitation of information and intelligence