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A source is a

person[] (human intelligence, or HUMINT) who collect[s] or possess[es] critical information needed for intelligence analysis.[1]
[a] document, interview, or other means by which information has been obtained. From an intelligence perspective, sources are individuals (or HUMINT) who collect or possess critical information needed for intelligence analysis.[2]
1. A person, thing, or activity from which information is obtained. 2. In clandestine activities, a person (agent), normally a foreign national, in the employ of an intelligence activity for intelligence purposes. 3. In interrogation activities, any person who furnishes information, either with or without the knowledge that the information is being used for intelligence purposes. In this context, a controlled source is in the employment or under the control of the intelligence activity and knows that the information is to be used for intelligence] purposes. An uncontrolled source is a voluntary contributor of information and may or may not know that the information is to be used for intelligence purposes.[3]


See Source IP address.


See Source code.


  1. U.S. Department of Justice, Minimum Criminal Intelligence Training Standards for Law Enforcement and Other Criminal Justice Agencies in the United States 46 (Ver. 2) (Oct. 2007) (full-text).
  2. U.S. National Intelligence: An Overview 2011, at 84.
  3. Operational Terms and Graphics, at 1-172 to 1-173.

See also[]