Blockchain may be a decentralized technology. Blockchain has slowly become one among the foremost frequently
discussed methods for securing data storage and transfer through decentralized, trust less, peer-to-peer systems. This timely
systematic review also sheds light on future directions of research, education and practices within the blockchain and cyber
security space, like security of blockchain in IoT, security of blockchain for AI data, and sidechain security. We also review the
safety enhancement solutions for blockchain, which might be utilized within the event of varied blockchain systems, and suggest
some future directions to stir research efforts into this area. Blockchain has attracted tremendous attention because of its
immutable nature and thus the associated security and privacy benefits. BC has the potential to beat security and privacy
challenges of the web of Things
