Methods of Surveillance
The SNI provided clearance for anyone seeking a government job or requesting to conduct research in the army archives. Using an elaborate system of informants and telephone taps, the SNI accumulated and analyzed reports on many sources.
One study by political scientist David V. Fleischer and Robert Wesson suggests that there were as many as 50,000 persons employed in the SNI during the 1964-85 regime. Furthermore, both Presidents Médici and Figueiredo had been SNI chiefs.
Read more about this topic: National Intelligence Service Of Brazil
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