An informer (also called an informant) is a person who provides privileged information about a person or organization to an agency. The term is usually used within the law enforcement world, where they are officially known as confidential human source (CHS), or criminal informants (CI). It can also refer pejoratively to someone who supplies information without the consent of the involved parties. The term is commonly used in politics, industry, entertainment, and academia.
In the United States, a confidential informant or "CI" is "any individual who provides useful and credible information to a Justice Law Enforcement Agency (JLEA) regarding felonious criminal activities and from whom the JLEA expects or intends to obtain additional useful and credible information regarding such activities in the future."
|Whitey Bulger||MKULTRA connected US Crime boss assassinated in prison aged 89|
|Emad Salem||FBI informant and key witness in the 1993 World Trade Center bombing|
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