This presentation explores usage patters of the Tor network: • What is this great technology called Tor? • How Tor supports human rights? • How cyber criminals use Tor? • How much Finnish people buy illegal drugs using Tor? Juha Nurmi is the founder and project leader of the Ahmia search engine and a voluntary member of the Tor Project. He is a security researcher and data scientist, and has been involved in numerous projects funded by both the commercial and government spheres, including DARPA Memex project in the Silicon Valley and Kinkayo Ltd in Singapore. Juha is also a noted lecturer and public speaker. Juha's work on Ahmia has been in part sponsored by the Google Summer of Code and he is mentoring Summer of Code 2016.