Using Game Theory to Secure Smart Contracts in Blockchain

The continuous improvement of internet technology invited many other technologies to integrate to solve different industrial and social problems. The utilization of clouds for data management of online transactions has become indispensable in the present digital world. The demand for cloud applications has been enhanced several times, even though the security threats to cloud data remain an unsolved issue. The smart contract running on blockchain framework is now being used in private, public, and industrial sectors. In the cloud environment, all user activities are divided into two types: honest operational and malicious activities. This, in turn, leads to serious security threats for the cloud system. In this paper, the security issues that arise due to the actions of honest and dishonest pools in the cloud are analyzed. The article tries to address the issues using non-cooperative games and find out the threshold values of the probability of an attack. The paper also defined the defensive user's state and the probability of building the system secure and risk-free smart contract execution.