Kim Cameron has done some nice high-level thinking about identity protection on the Internet. His title is Chief Architect of Identity at Microsoft. He has worked at Microsoft since 1999.
His paper, The Laws of Identity (PDF), provides a glimpse into some of his thinking on the subject.
The Internet was built without a way to know who and what you are connecting to. This limits what we can do with it and exposes us to growing dangers. If we do nothing, we will face rapidly proliferating episodes of theft and deception which will cumulatively erode public trust in the Internet.
This paper is about how we can prevent that loss of trust and go forward to give Internet users a deep sense of safety, privacy and certainty about who they are relating to in cyberspace.
The Laws, in a nutshell, are the following: