In light of recent events, let's hear it for Shockwave Rider by John Brunner (1975). http://en.wikipedia.org/wiki/Shockwave_Rider "The worm is eventually activated, and the details of all the government's dark secrets (clandestine genetic experimentation that produces crippled children, bribes and kickbacks from corporations, concealed crimes of high public officials) now become accessible from anywhere on the network - in fact, those most affected by a particular crime of a government official are emailed the full details."