Block Chain Security: Attacks & Issues

Blockchain is a technology which allows the decentralization of data.The data stored in a manner that there is no single central control to modify the data. Bitcoin is the first successful Blockchain application implemented with the concept known as cryptocurrency.Blockchain allows a transaction flow without the interference of any bank or government. Now in the last couple of years, the adoption of Blockchain has increased across multiple industry for different use cases and deployments. However, Blockchain security is still the weakest part of it & needs a better improvement. Therefore, the purpose of this study is to make a review of the Blockchain security issues using the past published literature. This Research conducts a review based on articles and research papers to find possible problem solving actions that gives an overall view of existing security threats and their respective impacts on Blockchain. This research starts with an overview on Blockchain Security and brief discussion on fellow attacks and issues.