Ethereum may benefit from an on-chain "risk warning system" to enhance security and user trust. Such a system could monitor smart contracts, flag vulnerabilities, and alert users to potential exploits or scams in real-time. By leveraging blockchain transparency, it could analyze transaction patterns, detect anomalies, and provide decentralized risk scores for DApps or wallets. This would empower users to make informed decisions, especially in DeFi, where hacks and rug pulls remain prevalent. However, implementing this raises concerns about centralization, privacy, and false positives. A community-driven, open-source approach could mitigate these issues, ensuring fairness and avoiding overreach. As Ethereum scales with Layer 2 solutions, integrating a risk warning system could strengthen its ecosystem, balancing innovation with safety.