In the context of residential IoT ecosystems, the paper explores the security landscape of popular communication protocols, including Bluetooth and Wi-Fi. The research attempts to uncover possible hazards, weaknesses, and concerns related to the adoption of IoT devices in home settings that use various communication protocols through a methodical process. Authentication methods, encryption techniques, and the general strength of security features in widely used smart devices are important areas of study. The results of the investigation highlight how urgently enhanced security measures are needed in the quickly developing field of residential Internet of Things (IoT) systems. Expanding on knowledge from earlier studies on IoT vulnerabilities, protecting consumer environments demands a comprehensive approach. Prospects could assist with creating a smart home environment that is safer and more reliable by implementing the recommendations made by the researchers into the implementation and use of IoT devices in the residential area. Protecting the interconnected structure of residential IoT ecosystems requires proactive measures and properly educated decision-making, as the field of Internet of Things (IoT) security continues to grow.