Secrecy- To conceal all aspects of a set of information from any one and all persons.

"...a secret matter is something one doesn't want anybody to know."

From A Cypherpunk's Manifesto

by Eric Hughes

“It has often been said that the true causes of terrorism are oppression, bad foreign policy, and secrecy... "

-Sousveillance Steve Mann

http://www.activism.net/cypherpunk/manifesto.html