breaches.nudgesecurity.com
Searchable timeline of publicly reported breaches with affected organizations, dates and data types.
Directory
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Published directory entries matching your search.
metrics.torproject.org
Historical lookup showing whether an IP address appeared as a Tor relay on a specified date.
github.com
Open-source interface and API project for searching indexed onion content.
onlinelibrary.london.ac.uk
University guide to finding databases and information that ordinary search engines do not index.
wikileaks.org
WikiLeaks archive for searching the Sony email release and related historical documents.
science.gov
Explains federated searching across government science databases often described as the deep web.