With the increasing need for information transmission globally for commerce, education, medicine, and other fields, the need for a safe and easy way to use software and hardware efficiently has arisen. The concept of contracting the Internet of Things (IoT) is to enhance the quality of connecting and exchanging data with others, improve implementation of works, increase productivity, and deliver all services efficiently and ubiquitously. The core idea of this technology is to embed different types of sensors along with devices to gather information and perform an action based on analysis of that information. This paper aims to review and explore the main concept of IoT, how it works, layers of intelligence system, possible attacks in each layer, and significant challenges associated with IoT and its potential solution. In addition, it will analyze the studies based on evaluation factors.

With the increasing need for information transmission globally for commerce, education, medicine, and other fields, the need for a safe and easy way to use software and hardware efficiently has arisen. The concept of contracting the Internet of Things (IoT) is to enhance the quality of connecting an...