The role of an ethical hacker in maintaining cybersecurity is to identify and exploit vulnerabilities in systems before malicious hackers can. Ethical hackers use the same techniques as cybercriminals, but with permission and for defensive purposes. They conduct penetration testing, assess security policies, and recommend improvements to protect systems and sensitive data. By simulating attacks, they help organizations strengthen their security posture and develop better incident response plans. Their work is crucial in proactively addressing potential threats and ensuring compliance with regulatory standards.