tor

Tor is an anonimity network created by the US military, for the US military. The catch is, if only the US military used tor, then they would have no anonimity!

Oh, and I forgot to mention this other basic fact. By design, tor provides anonymity for US military crimnals while at the same time allowing those same criminals to 'deanonymize' users. This happens because tor doesn't work agaisnt 'global adversairies', i.e. the US military. This is no different than a backdoored system like giving people an encryption system that uses weak keys.