Secure Log Storage Using Blockchain and Cloud Infrastructure

We are living in the era of information technology. Our day to day life is heavily dependent on it and hence it's safe and secure functioning become very crucial and important. Every minute, there are thousands of cyber-attacks taking place around the world. Attackers are continuously evolving sophisticated and stealthy techniques to target the victim. They takes all the precautionary measures to remove attack traces such as system logs and related information on the victim systems so that they cannot be traced back. Attackers intentionally spread their activities over longer period of time to evade detection. To understand and identify such complex attack, it is required to maintain a secure log records over extended time period. However, preserving the log records for longer time is challenging issue. The system should also ensure the integrity of log files and logging process. In order to overcome these issues, in this paper we are proposing a secure log storage using Blockchain on Cloud platform. Blockchain technology will help to create tamper-proof audit logs. It provides proof of log manipulation and non-repudiation. Cloud platform makes the overall system scalable and support for deep analysis.