ASmart Cities Smart Cities and Smart Objects The concept of the Internet of Things (IoT) has emerged as an area of incredible potential growth and growth, with Cisco predicting that nearly 50 billion devices will be connected by 2020. Hacking these Internet devices is easy, and these devices are compromised. Typically, these IoT devices have limited storage computing capabilities and network capacity, so they are superior to other end devices such as smartphones. Tablets or computers are more vulnerable to attacks. The mother of this article examines and reviews the major security. issues on the Internet of Things