In April 2026, two significant attacks on cross-chain bridges exposed vulnerabilities in decentralized finance (DeFi) systems. On April 18, KelpDAO was hacked due to a flaw in its cross-chain verification, resulting in a $293 million theft through forged messages. Shortly after, on April 29, the Syndicate Commons bridge saw a 35% token price drop due to missing message validation. These incidents highlight the security risks inherent in cross-chain bridges, which are increasingly becoming major vulnerabilities in blockchain infrastructure. The attacks exploited "trust blind spots" in the design of cross-chain bridges, allowing attackers to bypass security without altering core smart contract code. Common issues include overly simplistic verification processes, lack of bidirectional reconciliation, and excessive concentration of permissions. These vulnerabilities underscore the need for improved security measures, such as decentralized verification and ongoing auditing, to protect against future breaches. For users, minimizing cross-chain operations, avoiding newly launched bridges, and using sub-wallets for asset management are recommended to mitigate risks. Meanwhile, project teams are urged to implement decentralized verification, enforce minimum permissions with time locks, and segregate funds to enhance security.