While blockchain tech has changed the way we think about trust and decentralization, it's not immune to vulnerabilities. One such vulnerability that has garnered significant attention in the blockchain space is the "51% attack." In this article, we'll delve into what a 51% attack is, why it's a concern, and how blockchain networks aim to protect against it.

The Basics of Blockchain Security:

At the core of blockchain's security lies its decentralized nature. Transactions are validated and recorded by a network of nodes (computers) spread across the globe. These nodes reach consensus on the validity of transactions through various consensus algorithms, with proof of work (PoW) and proof of stake (PoS) being the most common.