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30 Cybersecurity Search Engines Every Researcher Should Bookmark

ID: 6950e5c6-0127-584c-8be1-834949a59664

STIX ID: report--6950e5c6-0127-584c-8be1-834949a59664

Feed Name: Security Boulevard

Date Published: 2026-05-25

Date Updated: 2026-05-25

Author: Deepak Gupta

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This blog post catalogs 30 cybersecurity search engines useful for security researchers and defenders—grouped by capability (Shodan/Censys for asset discovery, crt.sh/DNSDumpster for DNS and certificates, Dehashed/IntelligenceX for leaks, GrayHatWarfare for cloud buckets, Exploit-DB/Vulners for vulnerabilities, urlscan.io/PublicWWW for web analysis, grep.app/SearchCode for secret hunting, etc.)—and includes brief usage notes, ethical guidance, a ten-tool shortlist, and a sample workflow for external attack-surface reconnaissance.

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