A Certified Ethical Hacker (CEH) is a professional who is trained to identify and fix security vulnerabilities in computer systems and networks. They use the same tools and techniques as malicious hackers but do so legally and ethically, with permission from the organization they are testing. The goal is to improve security and protect sensitive information from cyber threats. To become a CEH, individuals typically undergo specialized training and must pass an exam that covers various topics, including network security, penetration testing, and risk management. This certification is recognized globally and is often pursued by those working in fields related to cybersecurity, information technology, and network administration.