Secure IoT data using blockchain

Internet of things (IoT) is a network of physical objects with embedded systems that are able to communicate with each other via the Internet. It leads to a distributed network of devices that can communicate with humans and objects. The implementation of IoT will provide benefits, but it also raises security issues that affect data integrity and privacy of the companies. In order to overcome security issues, blockchain technology is used. This chapter is based on up-to-date research on the blockchain as well as IoT with the purpose of studying the blockchain as potential solutions to secure IoT data. Both blockchain and IoT are new research areas into existing research, which support the use of a qualitative research method. The results indicate that blockchain is used to secure data management, but it is not a complete solution. Most of the security issues are related to devices, and blockchain technology handles information and secures identities, stock traceability and transactions, which are made without human interaction and with automated storage management. There are still some barriers to creating benefits work into reality. This chapter is focused on investigating the integration of IoT and blockchain to analyze and improve security issues