Shedding Light on the Dark Corners of the Internet: A Survey of Tor Research
It provides a comprehensive overview of Tor research, identifying key trends and gaps, which is useful for researchers and practitioners in anonymity and cybersecurity, but it is incremental as a survey.
This survey paper summarizes, analyzes, classifies, and quantifies 26 years of research on the Tor network, finding that 'security' and 'anonymity' are the most frequent keywords, with the majority of studies focusing on deanonymization strategies and path selection algorithms.
Anonymity services have seen high growth rates with increased usage in the past few years. Among various services, Tor is one of the most popular peer-to-peer anonymizing service. In this survey paper, we summarize, analyze, classify and quantify 26 years of research on the Tor network. Our research shows that `security' and `anonymity' are the most frequent keywords associated with Tor research studies. Quantitative analysis shows that the majority of research studies on Tor focus on `deanonymization' the design of a breaching strategy. The second most frequent topic is analysis of path selection algorithms to select more resilient paths. Analysis shows that the majority of experimental studies derived their results by deploying private testbeds while others performed simulations by developing custom simulators. No consistent parameters have been used for Tor performance analysis. The majority of authors performed throughput and latency analysis.