The cybersecurity of modern systems has dramatically increased attention from both industrial and academia perspectives. In the recent era, the popularity of the blockchain-based system has traditionally been emergent among various industrials sectors especially in supply chain management due to its streamlined nature. This reveals the importance of the quality aspects from a supply chain management perspective. Many industries realized the importance of having quality systems for supply chain management and logistics. The emergence of blockchain technology has created several potential innovations in handling and tracking business activities over the supply chain processes as specific. This paper shed the light on the blockchain and specifically on a smart contract technology which been used to handle the process of creation, verification and checking data over the supply chain management process. Then, touch upon the area of blockchain cybersecurity in the supply chain context. More and more, since the smart contract handles the transfer of data over different locations, then the security protection should be strong enough to secure the data and the assets from any attacks. Finally, the paper examines the main security attacks that affect the data on the blockchain and propose a solution