Web Reconnaissance & Fuzzing: Shodan, Censys, Wfuzz & Nuclei

Learn practical web reconnaissance, subdomain enumeration, fuzzing, and vulnerability discovery techniques in this hands-on cybersecurity course. This course introduces you to the fundamentals of reconnaissance and gradually moves into practical techniques used to discover and analyze publicly accessible web assets in authorized security testing environments. You will begin by understanding what reconnaissance is and how it fits into the ethical hacking process.

You will then explore Shodan, including its graphical interface and command-line usage, to understand how internet-facing information can be identified and analyzed. The course also covers subdomain enumeration and several techniques for discovering subdomains using Certificate Transparency, Shodan, Censys, and VirusTotal. You will also explore Sublist3r and SubBrute to understand additional approaches to subdomain discovery.

Next, you will learn how WaybackURLs can support reconnaissance and how historical web information can be useful during security assessments. The course then introduces automated XSS discovery and moves into the fundamentals of web fuzzing. You will learn what fuzzing is, how the fuzzing process works, why wordlists are important, and how fuzzing can help identify potential vulnerabilities.

Practical demonstrations with Wfuzz cover both basic and advanced techniques. The course also introduces techniques for identifying web application firewalls (WAFs) and demonstrates how Nuclei can be used to assist with vulnerability discovery. By the end of the course, you will have a stronger understanding of practical reconnaissance and web security workflows and the tools commonly used during authorized security assessments.

This course is suitable for cybersecurity students, ethical hacking learners, aspiring penetration testers, bug bounty beginners, and security enthusiasts who want to develop practical reconnaissance and web testing skills. All techniques should be used responsibly and only against systems you own or have explicit permission to test.