The STU-I, like its successors sometimes known as a "stew phone", was a
secure telephone developed by the U.S.
National Security Agency
The National Security Agency (NSA) is a national-level intelligence agency of the United States Department of Defense, under the authority of the Director of National Intelligence (DNI). The NSA is responsible for global monitoring, collect ...
for use by senior U.S. government officials in the 1970s.
See also
*
KY-3
The KY-3 (TSEC/KY-3) is a secure telephone system developed by the U.S. National Security Agency in the early 1960s. It was one of the first widely accepted voice voice encryption systems. The "TSEC" prefix to the model number indicates NSA's Tel ...
*
Navajo I
The Navajo I is a secure telephone built into a briefcase that was developed by the U.S. National Security Agency. According to information on display in 2002 at the NSA's National Cryptologic Museum, 110 units were built in the 1980s for use b ...
*
STU-II
*
STU-III
STU-III (Secure Telephone Unit - third generation) is a family of secure telephones introduced in 1987 by the NSA for use by the United States government, its contractors, and its allies. STU-III desk units look much like typical office telephone ...
*
SCIP
References
External links
Crypto Museum - STU IDelusion.org - National Cryptologic Museum pictures
National Security Agency encryption devices
Secure communication
{{telephony-stub