As Ethereum advances into the future, there are a number of tough problems to tackle.
These may very well present opportunities for new attacks. With bleeding edge tech comes initial releases that aren't focusing on security.
Privacy and zero-knowledge proofs
- Consensys: How the ZCash protocol can fill Ethereum's privacy gap
- Cryptography Engineering: Zero-knowledge proofs - an illustrated primer
- CoinDesk: EY reveals zero-knowledge proof privacy solution for Ethereum