| Abstract: Internet of Things and Blockchain are considered two major technologies. Internet of Things is facing many challenges such as poor interoperability, security vulnerabilities, privacy, and lack of industry standards. Most Internet of Things Devices needs a constant connection to the internet which brings many challenges in their protection and security the data. This is where Blockchain technology comes into use. The Blockchain provides decentralization and authentication that makes is impossible for third parties to gain access to the network. It provides much needed privacy and flexibility which is currently missing from IoT infrastructure. Our work provides a solution with overview what can be done to implement Blockchain in existing IoT infrastructure and furthermore improve security and privacy of the system. |