This article is from the Conspiracy Theory Literature FAQ, by Xavier Poez email@example.com with numerous contributions by others.
The NSA, or National Security Agency, is the subject of much CTL. CTL
sometimes states the NSA is a front for concealing secrets about
aliens, or operations involving them. Other scenarios are that the NSA
is a "trojan horse" to create an authoritarian government system.
Officially, the National Security Agency is in charge of creating
cryptographic devices for the military and government to allow secret
communications. The agency was concealed from existence for decades
from its inception in the 50's. The NSA has a "black budget" in the
billions of dollars per year. See [Bamford82].