A single blockchain may seem very secure, but that doesn't mean the entire ecosystem is safe. Where is the problem? Cross-chain bridging. These bridges carry all the traffic between chains and naturally become targets for attackers—because they are the only way for assets to flow. When you concentrate all risks in one place, it's like putting all your eggs in one basket. Interoperability is indeed the future of Web3, but the premise is to fundamentally rethink security defenses. It's not enough to rely on single-point protection; what is needed is system-level risk diversification and multi-layer defense mechanisms. This is the true direction to solve cross-chain issues.