http://cryptome.org/sigint-hr-dc.htm#Privacy%20and%20international%20telecommunicationsSignals intelligence and human rights
the ECHELON report
Prepared by Duncan Campbell
for the
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Electronic Privacy Information Center
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During the 1980s, staff and visitors who entered the operations block, Building 600, of RAF Chicksands – a USAF listening station in England - would pass a turnstile and a security badge check to be confronted directly with a Sigint in-joke. Pasted to the wall was a copy of the International Telecommunications Convention. The Convention, which both the United Kingdom and the United States have ratified, promises that member states will protect the privacy of communications. Passing by, the operators set out to do the opposite.