FBI Logo
A National Security Letter (NSL) is a form of administrative subpoena used by the United States Federal Bureau of Investigation and reportedly by other U.S. Government Agencies including the Central Intelligence Agency and the Department of Defense.
It is a demand letter issued to a particular entity or organization to turn over various record and data pertaining to individuals. They require no probable cause or judicial oversight. They also contain a gag order, preventing the recipient of the letter from disclosing that the letter was ever issued.
This post was published on February 24, 2015 6:20 am
In September 2024, a Freedom of Information Act (FOIA) request was filed with NASA seeking…
Background Welcome to the FBI Files on Historical Figures & Groups archive at The Black…
A new release of Department of Defense (DoD) emails obtained through the Freedom of Information…
Newly released Department of Defense records reveal the prolonged and often frustrating prepublication review process…
Newly released Federal Aviation Administration (FAA) documents obtained by The Black Vault under FOIA case…
Background The Central Intelligence Agency was created in 1947 with the signing of the National…