Mozilla service that checks email addresses against known breaches and explains protective steps.
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National Academies chapter explaining deep-web content, discovery limits and information retrieval.
Terminal monitor for inspecting a local Tor process, circuits, connections and relay activity.
Study of whether website fingerprinting can distinguish and identify Tor onion-service traffic.
Official guides for understanding, deploying and maintaining Tor onion services.
Tor Project documentation portal for onion-service applications, standards and operator tools.
Tor measurement project collecting performance data for public relays, bridges and onion services.
Open-source scanner for auditing onion-service metadata and operational security.
Open-source command-line tool that queries multiple onion search engines and exports results.
Network test that checks whether Tor access appears blocked and contributes measurement data.
Independent dashboard analyzing Tor relay operators, concentration and network diversity.
RAND study of illicit online markets and the operational lessons they present for public policy.
Research article cataloging ransomware leak sites and explaining how their status is tracked.
Open-source tracker monitoring ransomware leak sites and publishing structured status data.
Research covering cybercriminal communications, darknets, underground forums and financial crime.
Official directory of active, verified SecureDrop instances operated by news and advocacy organizations.
Official source guide for using verified SecureDrop instances and protecting submission codes.
Reporting archive on dark-web crime, underground forums, data leaks and law-enforcement actions.
WikiLeaks archive for searching the Sony email release and related historical documents.
Public-health research measuring harmful-content availability and searches on the Tor network.
Historical public mailing-list messages documenting Tor development, research and relay operations.
Archive of Tor Project monthly reports documenting development, research and community activity.
Official archive of older Tor software, websites, mailing lists, reports and project material.
Official community forum for Tor users, relay operators, developers and onion-service administrators.