Information technology has witnessed rapid development in recent years, with the emergence of the Internet of Things (IoT) being one of the most prominent developments. IoT relies on connecting smart devices to the internet to exchange data and perform tasks automatically. Despite the significant benefits it offers, this concept presents major security challenges that directly impact network security and data privacy. First: The Concept of the Internet of Things (IoT) The term Internet of Things refers to a network of physical devices connected to the internet, such as sensors, cameras, smart home appliances, and medical devices. These devices collect, process, and transmit data across networks without direct human intervention, making them a fundamental element of modern systems. Second: The Relationship Between the Internet of Things and Network Security IoT devices primarily rely on wired and wireless networks and often operate within the same network as computers and servers. Any security vulnerability in one IoT device could lead to a breach of the entire network, making network security a critical element in IoT environments. Third: Security Challenges Posed by the Internet of Things 1. Weak Protection Mechanisms Many IoT devices suffer from weak security settings, such as the use of default passwords or the absence of strong authentication systems. 2. Insufficient Encryption The lack of strong encryption protocols allows for the interception of data during transmission across the network. 3. High Number of Connected Devices Each new device connected to the network represents a potential vulnerability that can be exploited by attackers. 4. Difficulty in Updating and Maintaining Devices Some IoT devices do not support continuous security updates, making them susceptible to hacking. Image Description: Illustrates key security threats such as weak encryption, attacks, and poor device management. Fourth: The Impact of IoT Challenges on Network Security IoT security challenges can lead to: • Breach of corporate networks • Leakage of sensitive data • Disruption of network services • Threats to user privacy Fifth: Suggested Solutions to Enhance IoT Network Security • Use of strong encryption protocols • Changing default passwords • Isolating IoT devices in VLANs • Regularly updating hardware and software • Using firewalls and intrusion detection systems The Internet of Things (IoT) is a modern technology that has revolutionized the field of information technology. However, the security challenges it poses to network security require significant attention. By implementing appropriate security solutions and following effective protection policies, risks can be minimized, and this technology can be utilized safely and effectively.