30 cybersecurity search engines for researchers:

In general, a search engine is a program that searches a database on the internet (sites like Google or Bing) to find information that is relevant to a specific keyword or phrase. When you use a search engine, you enter a word or phrase (called a "query") into the search field, and the search engine returns a list of web pages that are relevant to your query. The search results are usually ranked by how relevant they are to your search term, with the most relevant results appearing at the top of the list. Search engines use complex algorithms to analyze the content of websites and determine their relevance to a particular search query.

• Access to information: Search engines provide a convenient and efficient way to access a vast amount of data on the internet. By simply typing in a few keywords, you can find websites, articles, and other resources related to various topics.
• Ease of use: Search engines are user-friendly, with intuitive interfaces that make it easy for people of all ages and backgrounds to find what they are looking for.
• Relevance of results: Search engines use complex algorithms to rank the results of a search based on their relevance to the keywords you enter. This means that you are more likely to find what you are looking for at the top of the search results, rather than having to sift through pages and pages of irrelevant content.
• Personalization: Many search engines allow you to customize your search experience by saving your search history, preferences, and other information. This can help the search engine provide more personalized results based on your past searches.
• Speed: Search engines are designed to be fast, so you can find what you are looking for quickly and easily. This is especially important in today's fast-paced world, where people often need to find information in a hurry.

Search Engines for Security Researchers

Security researchers use to gather tons of information and need to surf paramount of data. For them, search engines can be very useful, as they provide a quick and easy way to access a wide range of information on a variety of security-related topics. They can use search engines to find articles, blog posts, and other resources that provide information on new vulnerabilities, exploits, and other security issues. Search engines can also be used to find tools and resources that can help security researchers in their work, such as software that can be used to analyze and test the security of a system.

In addition to providing access to information, search engines can also be used by security researchers to monitor the internet for new security threats and vulnerabilities. By setting up alerts or performing regular searches for specific keywords, security researchers can stay up to date on the latest developments in the field and be alerted to potential security issues as they arise.

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 the latest vulnerabilities and exploits. 

30. SearchCode—Search 75 billion lines of code from 40 million projects.

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