Bitcoin's Bogeyman Cometh – Why Segwit2x Is a 51% Attack In bitcoin's Necronomicon of possible attacks and weaknesses, one reigns supreme – the 51% attack. If there is a fear that has played on people's minds as the end-of-days scenario for bitcoin, it is this. Attackers who hold more than 50% of hashing power could stop transactions from confirming and even reverse some transactions. They could undermine the whole project. Bitcoin's design and its system of economic incentives has been…