The source consists of excerpts that introduce the concepts of ethical hacking and penetration testing, indicating a focus on the methodologies used within these fields. The text likely serves to define how security professionals simulate cyberattacks to find and address vulnerabilities in systems. Ethical hacking is presented as an overarching topic that encompasses the specific, structured procedures of penetration testing. This material outlines the foundational relationship between using offensive techniques responsibly and improving cybersecurity defense. Therefore, the short text establishes the groundwork for discussing system-auditing practices designed for proactive security enhancement.