A Survey on Threats and Security Solutions for IoT

Architecture of a typical Internet of Things (IoT) system, is defmed as a four layers construction as follows: Data acquisition layer, Communication Layer, Cloud computing and storage layer andFinal UserApplication layer. Based on this type of architecture we can identify various threats for each layer in part and solutions for security and integrity of data to those threats. Through those solutions, the benefits and the disadvantages of the Blockchain technology were analyzed. This paper is a survey of threats and solutions to Internet of Things security and data integrity issues classified according to Internet of Things architecture layers. As a conclusion, the classification of the threats of the Internet of Things application can give an overview of the system needs in terms of security and data integrity solutions that can be adopted, depending on the functionality that the Internet of Things system must perform