if you don't want to be found use acronyms as EIN, ROSE, etc.pp.

in the 1970s scientists believed in EIN. well, it was a civilian research project while to be connected to the arpanet you needed to have the right contract with arpa/darpa in hand to be accepted and to go on-line.

yoshifumi masunaga, "the local computer network in tohoku district japan", august 1975, wp-75-202, iiasa: LocalNetworkDesign (application/pdf, 517 KB)

iiasa: conference 1974 on computer networks. hint: take a look at the discussion at the end