A Survey on Internet-of-Things Security: Threats and Emerging Countermeasures

Internet of things (IoT) is a world wide network and set of paradigms that are intended to allow communications between anything, anytime and anywhere. However, connected objects are in most cases vulnerable due to their constrained resources and the inherent IoT environment conditions, basically, the dynamic aspect, the heterogeneity, and the open and wireless medium of communication. Securing the IoT networks is still an open and challenging issue and the majority of traditional security mechanisms designed so far for Internet doesn’t satisfy IoT security requirements. Recently, the use of emergent technologies such as Artificial Intelligence mechanisms, Blockchain and IoTA as a promising solutions to solve security and privacy problems has shown a yield remarkable performance. In this paper we outline the security requirements proposed for the IoT. We provide a comprehensive taxonomy of the major security issues based on IoT architecture, attack implications and application areas. Furthermore, we tabulate and map the different countermeasures used to solve these threats taking into account new advances in security approaches. Finally, we discuss and compare the enumerated countermeasures for IoT security.