Security Challenges in 5G and IoT Networks: A Review

5G networks are poised to satisfy the anticipated growth in Internet of Technology (IoT) devices and their related systems. The invasion of 5G networks brings along with it an accelerated need for security and privacy. The need for tailor-made security solutions has become the need of the hour to ensure data integrity, confidentiality, and authentication in 5G-based IoT networks. Since IoT initiates sensors and actuators in a totally smart environment, IoT security will involve protecting the total deployment architecture of IoT from internal and external attacks. Integration of cryptographical algorithms and quantum cryptography has been used effectively to secure data in 5G networks. Privacy and identity management has been a mandatory requirement in networks carrying delicate data involved in retail shops, traffic services, and health monitoring systems. Securing data in 5G and IoT networks and detection of trustworthy and rogue nodes, proper monitoring, logging, and broadcasting are the vital necessities of any security system. The exhaustive survey on the security issues in the 5G-IoT scenario, highlights the application of the latest technologies, incorporation of hybrid methodologies in securing them, and also emphasizes on the open issues yet to be addressed and research challenges that are to be explored.