Communication networks have witnessed rapid development, contributing to improved connectivity and supporting modern applications such as e-learning and digital services. These technologies have played a vital role in simplifying daily life and enhancing communication between communities. With this advancement, challenges related to information security and data privacy have emerged, highlighting the role of Communication Engineering in designing secure and reliable networks that improve quality of life Prepared by Hawraa Hussein Shabib Department of Communication Engineering Technologies Al-Mustaqbal University… the first among private universities in Iraq