After the proof-of-stake (PoS) consensus algorithm will be implemented in Ethereum’s (ETH) blockchain, it would become more secure and costly to attack than Bitcoin (BTC), co-founder Vitalik Buterin has stated.
Buterin has voiced this opinion during Devcon 5, the Ethereum developers conference that took place in Osaka on Oct. 8–11. He specifically noted that — after the transition to PoS — higher cost of a potential attack would make Ethereum the safer network of the two.