A Certified Ethical Hacker (CEH) is a skilled professional trained to systematically attack computer systems, applications, networks, and databases to uncover vulnerabilities before malicious hackers can exploit them. By simulating the tactics and techniques used by cybercriminals, CEH professionals employ creative attack vectors and strategies to assess the security posture of a system. However, unlike cybercriminals, CEHs operate with full authorization from the system’s owners and follow a strict code of ethics, ensuring that their activities are legal and their findings are handled with confidentiality.

Certified Ethical Hackers are also adept at using a variety of tools, including penetration testing software and manual hacking techniques, to identify security loopholes that might not be immediately apparent. They stay up-to-date with the latest threats, zero-day vulnerabilities, and hacking methodologies to maintain a proactive approach in strengthening cyber defenses. Their work is crucial for identifying and patching vulnerabilities in critical infrastructures like financial institutions, government systems, and corporate networks.