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Research paper on finding and organizing scholarly databases within the academic invisible web.

Aftenposten AS instructions for submitting documents securely through its verified SecureDrop service.

Aftonbladet instructions for submitting documents securely through its verified SecureDrop service.

Search engine for finding indexed Tor onion services, with abuse filtering and public documentation.

Official Rust implementation of Tor with developer documentation and project tracking.

Checker for seeing whether an email appears in the historical Ashley Madison breach dataset.

News archive covering dark-web leaks, criminal forums, takedowns and ransomware activity.

Bloomberg Industry Group instructions for submitting documents securely through its verified SecureDrop service.

Bloomberg News instructions for submitting documents securely through its verified SecureDrop service.

Official Tor service distributing bridge relay addresses to users facing network blocking.

CBC instructions for submitting documents securely through its verified SecureDrop service.

Official Tor archive providing recent and historical network descriptors for reproducible research.

Tor network-health dashboard showing directory consensus, votes, signatures and relay measurements.

Official source repository for the Tor network daemon and core protocol implementation.

Research paper presenting a crawler architecture for collecting dark-web data over Tor.

Reporting and explainers on dark-web activity, leak sites and underground cybercrime.

Analyst posts on deep- and dark-web activity, threat actors and underground communities.

Dagbladet instructions for submitting documents securely through its verified SecureDrop service.

Dark-web intelligence company publishing monitoring, ransomware and underground-ecosystem analysis.

Research study examining the structure and technical characteristics of dark-web content and services.

Narrative podcast documenting breaches, underground actors, darknet cases and security investigations.

Analyst articles on darknet communities, ransomware, leak activity and underground intelligence.

Open-source interface and API project for searching indexed onion content.

DARPA research program that developed domain-specific search methods for hard-to-index web content.