The rapid proliferation of Smart Internet of Things (IoT) systems across various sectors, including healthcare, transportation, and smart homes, has significantly transformed the way we interact with technology. However, this surge in connectivity has also introduced a myriad of security challenges that pose serious risks to users and organizations alike. This research paper aims to identify and analyze the key security vulnerabilities inherent in Smart IoT systems and propose comprehensive solutions to mitigate these risks. The study begins by examining the diverse landscape of IoT devices (Yogesh K Dwivedi et al., 2022), which often lack standardized security protocols, making them susceptible to various cyber threats such as malware, unauthorized access, and denial-of-service attacks. Many devices are shipped with default passwords that remain unchanged, further exacerbating the security dilemma. The paper highlights the critical need for robust security measures, emphasizing the importance of encryption, secure boot processes, and regular software updates (Tataria H et al., 2021. Furthermore, the research advocates for a multi-layered security approach that involves collaboration among manufacturers, users, and regulatory bodies. By establishing industry-wide standards and promoting user awareness regarding security best practices, the overall resilience of IoT systems can be significantly enhanced. The integration of advanced technologies, such as machine learning and blockchain, is also explored as a means to improve threat detection and data integrity. ((Dash S et al., 2019), (Zhou Z et al., 2019), (Spyrolari et al., 2021). In conclusion, this paper underscores the urgency of addressing IoT security challenges to foster trust and reliability in these innovative technologies. As the number of connected devices continues to grow, ongoing research and cooperative efforts are essential to develop effective strategies that ensure a secure digital future. The findings of this study aim to contribute to the evolving discourse on IoT security, providing actionable insights for stakeholders across the industry.The rapid proliferation of Smart Internet of Things (IoT) systems across various sectors, including healthcare, transportation, and smart homes, has significantly transformed the way we interact with technology. However, this surge in connectivity has also introduced a myriad of security challenges that pose serious risks to users and organizations alike. This research paper aims to identify and analyze the key security vulnerabilities inherent in Smart IoT systems and propose comprehensive solutions to mitigate these risks. The study begins by examining the diverse landscape of IoT devices (Yogesh K Dwivedi et al., 2022), which often lack standardized security protocols, making them susceptible to various cyber threats such as malware, unauthorized access, and denial-of-service attacks. Many devices are shipped with default passwords that remain unchanged, further exacerbating the security dilemma. The paper highlights the critical need for robust security measures, emphasizing the importance of encryption, secure boot processes, and regular software updates (Tataria H et al., 2021. Furthermore, the research advocates for a multi-layered security approach that involves collaboration among manufacturers, users, and regulatory bodies. By establishing industry-wide standards and promoting user awareness regarding security best practices, the overall resilience of IoT systems can be significantly enhanced. The integration of advanced technologies, such as machine learning and blockchain, is also explored as a means to improve threat detection and data integrity. ((Dash S et al., 2019), (Zhou Z et al., 2019), (Spyrolari et al., 2021). In conclusion, this paper underscores the urgency of addressing IoT security challenges to foster trust and reliability in these innovative technologies. As the number of connected devices continues to grow, ongoing research and cooperative efforts are essential to develop effective strategies that ensure a secure digital future. The findings of this study aim to contribute to the evolving discourse on IoT security, providing actionable insights for stakeholders across the industry.