A Certified Ethical Hacker (CEH) is a professional who is trained to identify and address security vulnerabilities in computer systems. They use the same techniques as malicious hackers but do so legally and ethically to help organizations protect their data. The CEH certification is offered by the EC-Council, which sets standards for ethical hacking practices. To earn the CEH certification, candidates must complete a training program and pass an exam that tests their knowledge of various hacking tools and techniques. This certification is valuable for IT professionals, as it demonstrates their ability to safeguard systems against cyber threats and enhance overall cybersecurity measures.