Electronic Surveillance and the National Security Agency: From Shamrock to Snowden Electronic Surveillance and the National Security Agency: From Shamrock to Snowden Access Access on and off campus. Description A collection of leaked and declassified records documenting U.S. and allied electronic surveillance policies, relationships, and activities. It serves as an addition to several National Security Archive documents sets - including those on U.S. Intelligence and the National Security Agency. The records provide information on the limitations imposed on electronic surveillance activities, organizations, legal authorities, collection activities, and liaison relationships. This article was published on 2024-08-21