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An informant (also called an informer or, as a term, a " snitch", " rat", " canary", " stool pigeon", " stoolie", " tout" or " grass", among other terms) is a person who provides privileged information, or (usually damaging) information intended to be intimate, concealed, or secret, about a person or organization to an agency, often a government or law enforcement agency. The term is usually used within the law-enforcement world, where informants are officially known as confidential human sources ( CHS), or criminal informants ( CI). It can also refer pejoratively to someone who supplies information without the consent of the involved parties."The Weakest Link: The Dire Consequences of a Weak Link in the Informant Handling and Covert Operations Chain-of-Command" by M Levine. Law Enforcement Executive Forum, 2009 The term is commonly used in politics, industry, entertainment, and academia."Pursuing strategic advantage through political means: A multivariate approach" by DA Schuler, K Rehbein, RD Cramer – Academy of Management Journal, 2002"Reading English for specialized purposes: Discourse analysis and the use of student informants" by A Cohen, H Glasman, PR Rosenbaum-Cohen, TESOL Quarterly, 197

In the United States, a confidential informant or " CI" is "any individual who provides useful and credible information to a law enforcement agency regarding felonious criminal activities and from whom the agency expects or intends to obtain additional useful and credible information regarding such activities in the future".


Criminal informants
Informants are extremely common in every-day police work, including homicide and narcotics investigations. Any citizen who provides crime-related information to law enforcement by definition is an informant.Palmiotto, J., Micheal. Criminal Investigation. 4th ed. Boca Raton, FL: CRC Press, 2013. pp. 65–66

Law enforcement and intelligence agencies may face criticism regarding their conduct towards informants. Informants may be shown leniency for their own crimes in exchange for information, or simply turn out to be dishonest in their information, resulting in the time and money spent acquiring them being wasted.

Informants are often regarded as by their former criminal associates. Whatever the nature of a group, it is likely to feel strong hostility toward any known informers, regard them as threats and inflict punishments ranging from social ostracism through physical abuse and/or death. Informers are therefore generally protected, either by being segregated while in or, if they are not incarcerated, relocated under a new identity.


Informant motivation
Informants, and especially criminal informants, can be motivated by many reasons. Many informants are not themselves aware of all of their reasons for providing information, but nonetheless do so. Many informants provide information while under stress, duress, emotion and other life factors that can affect the accuracy or veracity of information provided.

Law enforcement officers, prosecutors, defense lawyers, judges and others should be aware of possible motivations so that they can properly approach, assess and verify informants' information.

Generally, informants' motivations can be broken down into self-interest, self-preservation and conscience.

A list of possible motivations includes:

  • Self-Interest:
    • Financial reward.Lyman, D., Micheal. Criminal Investigation: The Art and the Science. 6th ed. Columbia College of Missouri. Pearson, 2010. p. 264
    • Pre-trial release from custody.
    • Withdrawal or dismissal of criminal charges.
    • Reduction of sentence.
    • Choice of location to serve sentence.
    • Elimination of rivals or unwanted criminal associates.
    • Elimination of competitors engaged in criminal activities.
    • Diversion of suspicion from their own criminal activities.
    • Revenge.
    • Desire to become a spy.
  • Self-Preservation:
    • Fear of harm from others.
    • Threat of arrest or charges.
    • Threat of incarceration.
    • Desire for witness protection program.
  • Conscience:
    • Desire to leave criminal past.
    • Guilty conscience.
    • Redemption.
    • Mutual respect.
    • Genuine desire to assist law enforcement and society.
      (2025). 9780138000110, Pearson Canada.


Labor and social movements
Corporations and the detective agencies that sometimes represent them have historically hired to monitor or control labor organizations and their activities."Private detective agencies and labour discipline in the United States, 1855–1946" by RP Weiss. The Historical Journal, 2009. Cambridge Univ Press Such individuals may be professionals or recruits from the workforce. They may be willing accomplices, or may be tricked into informing on their co-workers' unionization efforts."Judicial Control of Informants, Spies, Stool Pigeons, and Agent Provocateurs" by RC Donnelly – Yale Law Journal, 1951

Paid informants have often been used by authorities within politically and socially oriented movements to weaken, destabilize and ultimately break them."Thoughts on a neglected category of social movement participant: The agent provocateur and the informant" by GT Marx – American Journal of Sociology, 1974


Politics
Informers alert authorities regarding government officials that are corrupt. Officials may be taking or be participants in a also called a kickback. Informers in some countries receive a percentage of all money recovered by their government.

The historian described a judiciary case which involved the prosecution of a woman suspected to have advised another woman not to marry : "Neither indeed was there any accuser, until a certain Jew, one charged with other offences, was induced, through hope of pardon, to give false evidence against the innocent. The equitable and vigilant magistrate conducted him out of the city under a guard, lest the populace should have stoned him... The Jew was ordered to the torture till he should speak as he had been instructed... The innocent were condemned to die.... Nor was the promise of pardon made good to the feigned adulterer, for he was fixed to a gibbet, and then he disclosed the whole secret contrivance; and with his last breath he protested to all the beholders that the women died innocent."

Criminal informant schemes have been used as cover for politically motivated intelligence offensives."CIA Assets and the Rise of the Guadalajara Connection" J. Marshall – Crime, Law and Social Change, 1991


Jailhouse informants
Jailhouse informants, who report (admissions against penal interest) which they claim to have heard while the accused is in pretrial detention, usually in exchange for sentence reductions or other inducements, have been the focus of particular controversy. scc.lexum.umontreal.ca Some examples of their use are in connection with , Cameron Todd Willingham, Thomas Silverstein, Marshall "Eddie" Conway,
(2025). 9780822339236, Duke University Press. .
and a suspect in the disappearance of . The Innocence Project has stated that 15% of all wrongful convictions later exonerated because of results were accompanied by by jailhouse informants. 50% of convictions exonerated by DNA were accompanied by false testimony by jailhouse informants.


Terminology and slang
terms for informants include:
  • blabbermouth
  • cheese eater
  • canary – derives from the fact that canaries sing, and "singing" is underworld or street slang for providing information or talking to the police.
    (2025). 9781449397784, O'Reilly Media. .
  • dog – Australian term. May also refer to who specialize in surveillance, or police generally.
  • ear – someone who overhears something and tells the authorities.
  • fink – this may refer to the Pinkertons who were used as plain-clothes and ."The Origin of fink 'informer, hired strikebreaker'" by William Sayers. A Quarterly Journal of Short Articles, Notes, and Reviews. Winter 2005 Cornell University
  • grass
    (1995). 9781906534493, Waterside Press.
    or supergrass"The Intelligence War in Northern Ireland" by K Maguire – International Journal of Intelligence and CounterIntelligence, Volume 4, Issue 2 1990, pp. 145–165 for "grasshopper", meaning "copper" or "shopper", having additional associations with the popular song and the phrase "snake in the grass".
    (1995). 9780198257660, Clarendon Press. .
  • narc – a member of a specialist anti-narcotic agency or police intelligence force. Chicano intravenous drug users: The collection and interpretation of data from hidden Populations by R Ramos. 1990
  • nark – this may have come from the term nak for "nose" or the term narquois, which means "cunning", "deceitful", and/or "criminal". Prison patter: a dictionary of prison words and slang by A Devlin. 1996"Some ethical dilemmas in the handling of police informers" by C Dunnighan, C Norris – Public Money & Management, 1998
  • nose
  • term meaning "one who repents". Originally and most frequently used in reference to Mafia informants,
    (2025). 9781442222274, Rowman & Littlefield. .
    it has also been used to refer to informants for Italian paramilitary and terrorist organizations (such as the
    (2025). 9780253057143, Indiana University Press.
    (2025). 9781412980166, SAGE Publications.
    and ), and people who delivered confidential informations to the authorities during the "" and "" nationwide judiciary investigations.
  • pursuivant (archaic)"Speaker and Structure in Donne's Satyre" by NM Bradbury. Studies in English Literature, 1500–1900, 1985.
  • rat"Sociology of Confinement: Assimilation and the Prison 'Rat'" by EH Johnson. The Journal of Criminal Law, Criminology, and Police Science. 1961 – informing is commonly referred to as "ratting" in .
  • snitch"Reflections on the role of statutory immunity in the criminal justice system" by WJ Bauer – Journal of Criminal Law. & Criminology, 1976 – informing is commonly referred to as "snitching", term originally used within the African-American community and more recently associated with hip hop music, hardcore rap, and , alongside their derivative subgenres and .
    (2025). 9780814758588, New York University Press.
  • snout
  • spotter"Instigated Crime" by S Shaw – Alta. LQ, 1938
  • squealer
  • term meaning "stabber", mainly used in relation to World War II. During and after the Nazi occupation of Denmark (1940–1945), the word has been used specifically to indicate the Danish whistleblowers, agents, and spies which informed the German secret police, the , in order to undermine the Danish resistance movement.
  • stool pigeon or stoolie"Elevating the Role of the Informer: The Value of Secret Information". MW Krasilovsky. ABAJ, 1954
  • tell tale or tell-tale"On Truth and Lie in a Colonial Sense: Kipling's Tales of Tale-telling" by A Hai – ELH, 1997"Telling tales in school" by A Minister. Education 3–13, 1990
  • tattle-tale
  • tittle-tattle
  • – Northern Irish term for an informant, often one who informed on the activities of Irish paramilitary organizations during "".
  • trick Prison ministry: hope behind the wall by Dennis W. Pierce – 2006
  • weasel
  • X9 - A slang term in , possibly inspired by the comic strip Secret Agent X-9.

The term "stool pigeon" originates from the antiquated practice of tying a to a stool. The bird would flap its wings in a futile attempt to escape. The sound of the wings flapping would attract other pigeons to the stool where a large number of birds could be easily killed or captured.

(2025). 9780691162959, Princeton University Press.


List of notable individuals
  • , actor, who was arrested with cocaine and provided the names of other dealers in exchange for a sentence of three to seven years rather than a possible life imprisonment
  • , head of The Council, which he would later testify against
  • , Boston Irish mob boss
  • Nicholas Calabrese, a who testified against the
  • James Carey, Irish terrorist
  • , Whitey Bulger's partner-in-crime
  • Flores twins Pedro and Margarito
  • , former Australian barrister who provided information on her own clients
  • , former of the Gambino crime family
  • Daniel Hernandez a.k.a. Tekashi 6ix9ine, American rapper, who testified against Nine Trey Gangsters
  • , Lucchese crime family associate
  • , New York City drug dealer turned informant
  • , the first boss of one of the in New York City to turn state's evidence
  • , author of Orwell's list
  • , Murder, Inc. hit man
  • Freddie Scappaticci, member of the
  • , soldier of the Genovese crime family
  • , former underboss of the Bonanno crime family
  • Richard Wershe Jr. (commonly known as "White Boy Rick"), the youngest FBI informant ever at age 14


By country

Russia and Soviet Union
A system of informants existed in the and was later adopted by the . In , such people were known as osvedomitel or donoschik, and secretly cooperated with law enforcement agencies, such as the force and later the Soviet or . Officially, those informants were referred to as "secret coworker" (, sekretny sotrudnik) and often were referred by the Russian-derived seksot. In some KGB documents has also been used the designation "source of operational information" (, istochnik operativnoi informatsii). Andropov to the Central Committee. The Demonstration in Red Square Against the Warsaw Pact Invasion of Czechoslovakia. September 20, 1968


Germany

Poland

Venezuela

See also


External links

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