Guide to search tools and databases that surface information outside conventional web indexes.
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Tor Project hub for technical reports, open research questions, datasets and research safety guidance.
ERIC record for a guide to finding specialized databases and other web content missed by search engines.
Official source guide for using verified SecureDrop instances and protecting submission codes.
University guide to finding databases and information that ordinary search engines do not index.
DARPA research program that developed domain-specific search methods for hard-to-index web content.
Research service publishing structured ransomware and cybercrime ecosystem tracking data.
Europol and EMCDDA report on darknet drug markets, policy implications and research evidence.
Research archive containing dark-web authorship verification datasets and baseline models.
Official guides for understanding, deploying and maintaining Tor onion services.
Research paper on finding and organizing scholarly databases within the academic invisible web.
Official Tor archive providing recent and historical network descriptors for reproducible research.
Research paper presenting a crawler architecture for collecting dark-web data over Tor.
Research study examining the structure and technical characteristics of dark-web content and services.
Research paper describing large-scale crawling and analysis methods for onion services.
National Transportation Library record for research on discovering and cataloging hidden-web resources.
Research articles on dark-web monitoring, exposed data, cybercrime groups and external threats.
Research paper on integrating data from web databases that are not directly indexed by search engines.
Research study on identifying and understanding search interfaces that expose hidden-web databases.
Historical visualization and research record mapping a sample of linked Tor onion services.
CUNY research paper examining automated collection and analysis of dark-web forum data.
Research paper evaluating abuse observed through a controlled honeypot hosted as a Tor onion service.
Open-source utility for gathering public metadata about onion services during authorized research.
Open-source ransomware monitoring project indexing group posts for defensive research.