Dear friends, Before going into details about the 51% attack, it is important to know that blockchain protocols use some form of governance. In simple terms, governance in blockchain is a structure that every user or contributor is able to follow. A blockchain keeps track of a ledger of data, for example transaction data. With this data control and monitoring, we can understand that there is no need for a third party such as the government or banks to do this. This is what makes (most) blockchains decentralized. Stay with us in the rest of the article to explain the meaning of 51% attack.