Prepared by Dr. Noor Abdul Karee Department of Communication Technologies .smart systems, modern communication networks face significant cybersecurity challenges. As the number of interconnected smart devices grows, securing communication between them has become essential to protect data and infrastructure. Lightweight cryptography emerges as an innovative solution to secure resource-constrained devices such as sensors and smart cameras, providing strong protection without impacting device performance. The field of communication engineering plays a key role in developing strategies to protect critical infrastructure—including energy, transportation, and digital services—from potential cyberattacks by designing secure protocols and applying the latest security technologies. Experts emphasize that investing in cybersecurity and researching advanced encryption techniques is fundamental to ensuring a safe digital environment and a reliable smart future driven by IoT. Al-Mustaqbal First University in Iraq