Carácter o condición de anónimo.
DRAE. Diccionario de la Lengua Española.
1. Dicho de una obra o de un escrito: Que no lleva
el nombre del autor.
2. Dicho de un autor: Cuyo nombre se desconoce.
DRAE. Diccionario de la Lengua Española.
the state of remaining unknown
to most other people
Oxford Advanced Learner's
Dictionary.
(I) The condition of an
identity being unknown or concealed. (See: alias, anonymizer, anonymous
credential, anonymous login, identity, onion routing, persona certificate. Compare: privacy.) [RFC4949:2007]
(also see Pseudonymity and Pseudonymous
profiling)
A condition in which your
true identity is not known. Your online service provider may allow you, as a
subscriber, to participate in online activities anonymously (not known at all)
or pseudonymously (taking on a different identity).
http://www.consumerprivacyguide.org/glossary/