CHALKFUN Foreignness Determination
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National Security Agency

Glossary: agencies

Date Created: 2009-02
Classification: Unknown
Distribution: Unknown

Glossary: classification and distribution codes.

Genre: Teaching materials, .PDF , 1 p.

Journalist(s): Barton Gellman : Ashkan Soltani
Originating Media Outlet: The Washington Post
Date Published: 2013-12-04
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Communications Target: Domestic communications
Surveillance Program(s): CHALKFUN : FASCIA

Glossary: surveillance programs.

Description: This document is an excerpt from an NSA training tool explaining how to determine whether a targeted device is being used outside the United States. It illustrates a hypothetical example involving a query to CHALKFUN, the tool used to search FASCIA, the NSA's database of device-location information.