Vitalik Buterin divulges the ‘largest remaining challenge’ in Ethereum By Cointelegraph

co-founder Vitalik Buterin has shared a possible solution to what he describes as the “largest remaining challenge” on Ethereum — privacy.

In a blog post on Jan. 20, Buterin acknowledged the need to come up with a privacy solution because by default, all information that goes onto a “public blockchain” is public too.