Darknet security: A categorization of attacks to the tor network

In the darknet security topic, it is important to analyze the threats that characterize the network. This paper deeply investigates the literature of attacks against the Tor network, presenting the most relevant threats in this context. In order to provide an important tool for the research community, we propose an exhaustive taxonomy based on the target of the attack. Such taxonomy represents a characterization scheme to identify cyber-attacks related to darknet environments and better understand their functioning. The proposed work should therefore be considered an important step forward in the darknet security field.