[tor-dev] Paper on how DNS affects Tor's anonymity

My colleagues and I published a (not yet peer-reviewed) research paper on how DNS affects Tor's anonymity. The key parts of our work are:

- We measure the DNS setup of exit relays over time, showing that at times Google got to see almost 40% of DNS requests coming out of Tor.

- We show how website fingerprinting attacks can be augmented with observed DNS requests, resulting in precise attacks for unpopular websites.

- Similar to the "Users Get Routed" work, we simulate the impact of our attack at Internet-scale using the TorPS simulator.

The PDF is available online: https://nymity.ch/tor-dns/tor-dns.pdf

Our project page has code, data, and replication instructions: https://nymity.ch/tor-dns/