Polygon co-founder Sandeep has highlighted the vulnerabilities in current cross-chain bridge security models following a series of recent attacks. Over the past three weeks, incidents involving Drift, Polkadot Hyperbridge, and KelpDAO resulted in significant financial losses, exposing the weaknesses of committee-based security models. Sandeep argues that these models, which rely on small committees to verify transactions, are outdated and susceptible to compromise. Sandeep advocates for the adoption of zero-knowledge (ZK) proofs as a more secure alternative. He emphasizes that ZK proofs, which have been implemented in Polygon's Agglayer bridge since 2024, offer a robust solution by providing cryptographic verification that is immune to social engineering and operational errors. This approach, he asserts, is essential for handling the increasing scale of cross-chain transactions securely. Sandeep calls on the industry to transition from committee-based models to cryptographic verification to ensure the future security of cryptocurrency infrastructure.