Understanding the Usage of Anonymous Onion Services: Empirical Experiments to Study Criminal Activities in the Tor Network
Technology is the new host of life, and with each passing year, developments in digitalization make it easier to destroy our understanding of authenticity. A man is more than his distorted shadow on Facebook wall. Another essential shadow dwells under anonymity. The aim of this thesis is to understand the usage of onion services in the Tor anonymity network. To be more precise the aim is to discover and measure human activities on Tor and on anonymous onion websites. We establish novel facts in the anonymous online environment. We solve technical problems, such as web crawling and scraping to gather data. We represent new findings on how onion services hide illegal activities. The results are merged with wider range of anonymous onion services usage. We selected to cast light to the criminal dark side of the Tor network, mainly black marketplaces and hacking. This is a somewhat factitious selection from the wide range of Tor use. However, an archetype villain is found in nearly every story so naturally, for the sake of being interesting, we selected criminal phenomenon to study. To be clear, the Tor network is developed and utilised for legal online privacy and several other essential ways. The first finding is that as the Tor network becomes more popular also illegal activities become wide spread. Tor and virtual currencies are already transforming drug trade. Anonymous high class marketplaces are difficult for the law enforcement to interrupt. On the other hand, now illegal activities are paradoxically more public than ever: everyone can access these onion sites and browse the product listings. The illegal trade is transparent to be followed. For example, by the means of web crawling and scraping, we produced nearly real time picture of the trade in Finland following one of the marketplaces on Tor. As a result, statistics shed light on substance consumption habits: the second study estimates that sales totalled over two million euros