Courses / HDNA Ethical Hacking Course

3. Reconnaissance

Last Edit: 18-05-2024

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Welcome to Module 3 of your ethical cybersecurity training. 

This module focuses on the critical phase of information gathering and reconnaissance, laying the groundwork for effective penetration testing and ethical hacking engagements. You'll delve into DNS enumeration techniques, subdomain discovery, and files and directories discovery using powerful tools.

3.1 Subdomain Discovery

Importance of Subdomain Discovery

Subdomain discovery is a crucial aspect of the reconnaissance phase in penetration testing and ethical hacking or CTF challenges. 

What this phase will reveal:

  • Uncovering Hidden Infrastructure

Subdomains can reveal additional servers, services, and applications that are part of an organization's infrastructure but are not immediately visible on the main domain. These hidden assets might have different security postures and could be potential entry points for attackers.

  • Identifying Development and Staging Environments
    Development, testing,

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