According to online reports, Vitalik issued an article dividing Ethereum Rollup security into three stages: Stage 0: The security committee can completely veto the certification system, and control is centralized. Stage 1:6/8 members are required to agree before intervention. There is a threshold for external members and intervention is limited. Stage 2: Intervene only when verifiable errors occur and cannot be adjudicated arbitrarily. He suggested that as trust in the proof system increases, we should gradually transition from Phase 0 to Phase 2. Phase 0 has the lowest safety and long-term stays should be avoided. Rollup should be started at least in Phase 1, while focusing on auditing and maturity building of the certification system.