What Is a 51% Hash Attack -- and Are You Vulnerable?

What Is a 51% Hash Attack -- and Are You Vulnerable?

When it debuted, Bitcoin (CRYPTO: BTC) was considered innovative as the world's first secured peer-to-peer electronic cash payment system. Without these, Bitcoin would be nothing more than a string of code anyone could copy and paste -- which would quickly break down trust. It's not just Bitcoin; altcoins that use a PoW consensus mechanism, such as Ethereum Classic and Bitcoin Gold, have all suffered 51% attacks in the past.