L2 Security & Ethereum Ecosystem - Vitalik Buterin addresses confusion around Layer 2 (L2) security, clarifying their role as non-custodial extensions of Ethereum [1] - L2s protect users from operator theft via smart contract logic on Ethereum Layer 1 (L1) [1] - L2s are not merely "glorified servers" submitting hashes [1] - Buterin defends Base and L2beat's framework for assessing L2 security [1]