arxiv.org
Measurement study mapping the I2P anonymity network and analyzing its observable structure.
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gitlab.torproject.org
Tor measurement project collecting performance data for public relays, bridges and onion services.
ooni.org
Network test that checks whether Tor access appears blocked and contributes measurement data.
metrics.torproject.org
Official interface for exploring public Tor relay and bridge metadata from Onionoo.
consensus-health.torproject.org
Tor network-health dashboard showing directory consensus, votes, signatures and relay measurements.
arxiv.org
Research paper describing large-scale crawling and analysis methods for onion services.
arxiv.org
Longitudinal study measuring unique Tor onion services while accounting for mirrors and topology bias.
arxiv.org
Research paper evaluating abuse observed through a controlled honeypot hosted as a Tor onion service.
arxiv.org
Public-health research measuring harmful-content availability and searches on the Tor network.
arxiv.org
Research study examining the structure and technical characteristics of dark-web content and services.
darpa.mil
DARPA research program that developed domain-specific search methods for hard-to-index web content.