30 cybersecurity search engines for researchers:

1. Dehashed — View leaked credentials.
2. SecurityTrails — Extensive DNS data.
3. DorkSearch — Really fast Google dorking.
4. ExploitDB — Archive of various exploits.
5. ZoomEye — Gather information about targets
6. Pulsedive — Search for threat intelligence.
7. GrayHatWarfare — Search public S3 buckets.
8. PolySwarm — Scan files and URLs for threats.
9. Fofa — Search for various threat intelligence.
10. LeakIX — Search publicly indexed information.
11. DNSDumpster — Search for DNS records quickly.
12. FullHunt — Search and discovery attack surfaces.
13. AlienVault — Extensive threat intelligence feed.
14. ONYPHE — Collects cyber-threat intelligence data.
15. Grep App — Search across a half million git repos.
16. URL Scan — Free service to scan and analyse websites.
17. Vulners — Search vulnerabilities in a large database.
18. WayBackMachine — View content from deleted websites.
19. Shodan — Search for devices connected to the internet.
20. Netlas — Search and monitor internet connected assets.
21. CRT.sh — Search for certs that have been logged by CT.
22. Wigle — Database of wireless networks, with statistics.
23. PublicWWW — Marketing and affiliate marketing research.
24. Binary Edge — Scans the internet for threat intelligence.
25. GreyNoise — Search for devices connected to the internet.
26. Hunter — Search for email addresses belonging to a website.
27. Censys — Assessing attack surface for internet connected devices.
28. IntelligenceX — Search Tor, I2P, data leaks, domains, and emails.
29. Packet Storm Security — Browse latest vulnerabilities and exploits.
30. SearchCode — Search 75 billion lines of code from 40 million projects.

credit: https://twitter.com/danielmakelley/status/1604838895962800128

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