Anatomy of a 51 % double-spend attack
Maybe you’ve heard about the recent attack on Bitcoin Gold exchanges, where the attackers stole some BTG using a form of double-spend attack. Now, you might start to wonder: How is that possible? The genius of blockchain is in preventing exactly this type of attack. But this crucial property holds only under certain network conditions. Let’s explore how such an attack is possible and what you can do to protect against it.