The Ethereum Beacon Chain experienced a seven-block reorganization today. Here’s what that means, and why it could have been a security risk. The Ethereum beacon chain, which will be crucial to the Ethereum Merge scheduled for later this year, today experienced a potentially high-level security risk known as a blockchain “reorganization.” A reorganization, or reorg, can happen either through a network failure, such as a bug, or a malicious attack, temporarily resulting…