Dr. Abdelrhman Ahmed Refaat is a Cybersecurity Engineer and International Instructor specializing in network security, firewalls, IoT security, and ethical hacking. With extensive experience teaching for Cisco Networking Academy and Huawei ICT Academy, he has trained countless learners in mastering modern cybersecurity and networking technologies. Recognized for his excellence and dedication, Dr. Abdelrhman combines deep technical expertise with a passion for empowering others to secure and innovate in the digital world.