Marit Hansen, Andreas Pfitzmann, and myself have recently worked on an Internet draft about privacy terminology.
The exact document title is “Terminology for Talking about Privacy by Data Minimization: Anonymity, Unlinkability, Undetectability, Unobservability, Pseudonymity, and Identity Management” and the document can be found here:
The abstract says:
This document is an attempt to consolidate terminology in the field privacy by data minimization. It motivates and develops definitions for anonymity/identifiability, (un)linkability, (un)detectability, (un)observability, pseudonymity, identity, partial identity, digital identity and identity management. Starting the definitions from the anonymity and unlinkability perspective and not from a definition of identity (the latter is the obvious approach to some people) reveals some deeper structures in this field.
We believe it is help for working groups in the IETF to have a consistent terminology for privacy.
We are looking for reviewers! Please drop us a note if you have some comments.