For those who don't know, Ethereum classic is actually the original Ethereum blockchain . The current Ethereum blockchain is actually a fork of the Ethereum classic. We 've covered this extensively in our article on Ethereum versus the Ethereum classic , but only the split fell into a dispute in the Ethereum community. In June 2015, a famous incident called the DAO hack took place. This was when a hacker was able to leverage a project's code to attract millions of ETH.
There were some developers (current Ethereum developers) who supported hard forking of code, but there were others who saw this as a violation of the " code is law " principle.[...]