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There is a growing need for intelligent devices with sensors that take data from their surroundings, evaluate it, and transfer it to remote locations where experts may further analyze it in other areas. Device security and privacy concerns have arisen due to the increased use of IoT gadgets and tight deadlines for device development. Commercial and industrial IoT devices are used in this research as examples to analyze the safety of hardware, software, networks, and backdoors to understand better the security vulnerabilities of existing IoT devices and support the development of low-cost IoT security methods. Several security weaknesses may be found in a home automation system and a smart metre if thoroughly examined. We'll talk through security solutions and mitigation strategies to help IoT manufacturers secure their products.