science.gov
Explains federated searching across government science databases often described as the deep web.
Directory
Search results
Published directory entries matching your search.
worldwidescience.org
Federated search portal querying science databases and repositories across many countries.
darktracer.io
Dark-web intelligence company publishing monitoring, ransomware and underground-ecosystem analysis.
idtheftcenter.org
Identity Theft Resource Center database documenting publicly reported US data compromises.