Tor Primer for Data Scientists
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How Tor works
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After reading the introduction on https://www.torproject.org/about/overview.html.en I still have the following questions:
* Node vs Relay
* Does the client know the complete route or does it like every other relay only know the first step? If it knows the whole rout, how is that knowledge protected?
* Is the route changed at a certain invertal or for every request (website)?

Reading https://people.torproject.org/~karsten/volatile/measurement-roadmap.pdf:
* What is all this consensus about?

Heading over to wikipedia added the follwing:
* How are bridge relays kept secret and found when needed?

Available data
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* Where to find what data
* Everything avalable as .csv?

Examples
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* On metrics.torproject.org links to the plotted data would be helpful (and maybe also to the file in the git repo, where the graph is generated?)
* How did the Sybil attack work? How can it be detected?
* Current challenges

https://metrics.torproject.org/about.html cleared most of this, but it is quite well hidden -- maybe just extending that a little and make it more prominent?