PRISM always seemed to me like an extension of ECHELON from the 1960s. Governments have been doing sigint for a very long time. https://en.wikipedia.org/wiki/E

PRISM always seemed to me like an extension of ECHELON from the 1960s. Governments have been doing sigint for a very long time. https://en.wikipedia.org/wiki/ECHELON https://en.wikipedia.org/wiki/ECHELON