Role of Blockchain and AI in Security and Privacy of 6G

In the coming era, 6G is expected to bring a new reality that contains billions of things, humans, connected cars, robots and drones that will produce Zettabytes of digital data. 6G is mainly used to design an inclusive digital and physical environment, which is able to sense it, understand it and programme it. Several countries around the world are competing to own 6G infrastructures and solutions since this new technology provides huge capabilities that will reshape how enterprises operate. Although 6G provides several advantages over existing technologies, security and privacy issues still need to be addressed. This is because 6G provides automatization of most critical processes, which produce a more wide and complex attack surface. Also, with 6G, the network becomes more vulnerable not only to direct security attacks but also to misbehaviour of automated processes that require to be recognized, and their effect should be minimized. This chapter provides a discussion of security and privacy issues in 6G and how the integration of blockchain and Artificial Intelligence (AI) with 6G can provide possible solutions to overcome these issues. The chapter starts by providing an overview of wireless communications technologies from 0 to 6G. This is followed by discussing the main security and privacy issues in 6G networks. Then, the integration of blockchain with 6G will be discussed by highlighting possible solutions to overcome security and privacy issues associated with 6G. The integration of 6G with AI will be also discussed by highlighting the importance of AI in 6G and how AI with 6G can provide better and effective security and privacy solutions. In the end, healthcare with 6G is presented as a use case by highlighting security issues and discussing the role of AI and blockchain in providing effective security solutions in the healthcare sector.