We explore three widely used tools in the field of ethical hacking—Kali Linux, Burp Suite, and Termux—each serving a distinct purpose in cybersecurity practices. With Kali Linux, we dive into system-level penetration testing using a suite of built-in tools. Through Burp Suite, we examine the process of identifying and analyzing web application vulnerabilities. And with Termux, we demonstrate how mobile-based command-line access can support scripting and reconnaissance. Together, these tools help us understand the practical workflows of ethical hackers and how they test, secure, and strengthen digital systems responsibly.