A worrisome set of posts from Princeton University's 'Freedom to Tinker" Blog:
In many situations, it may be far easier to unmask apparently anonymous online speakers than they, I, or many others in the policy community have appreciated. Today, I'll tell a story that helps explain what I mean. Second post: what BoingBoing knows about John Doe. Third, and most concerning post: The traceability of an online anonymous comment. Related post: a well researched review of the privacy concerns around the roll-out of, and push-back against, Google Buzz.
posted by Rumple on Feb 18, 2010 - 41 comments

The Anonymity Experiment. Is it possible to hide in plain sight? Privacy-minded people have long warned of a world in which an individual’s every action leaves a trace, in which corporations and governments can peer at will into your life with a few keystrokes on a computer. Now one of the people in charge of information-gathering for the U.S. government says, essentially, that such a world has arrived.
posted by amyms on Feb 16, 2008 - 44 comments

This is an ironic tale of the consequences of inept application of cryptographic tools. Or is it? Dan Egerstad, a Swedish hacker, gained access to hundreds of computer network accounts around the world, belonging to various embassies, corporations and other organizations. How did he do it? Very easily: by sniffing exit traffic on his Tor nodes. [more inside]
posted by Anything on Dec 4, 2007 - 27 comments

SafeWeb not so safe? It was pitched as a "web anonymizer." It was supposedly even "CIA proof." Now some holes have been found.
posted by yesster on Feb 12, 2002 - 13 comments