Onionscan was a tool that implemented all known deanonymization techniques for v2 onion services and allowed them to be tested at scale. This led to both an understanding of how prevelent such issues were in addition to the discovery of new deanonymization techniques.

Onionscan Homepage - a collection of links to all OnionScan reports

Source Code (github) - very outdated source on github

List of Techniques

Onionscan implemented the following deanonmyzation techniques:

Selected Talks