[Gravity Bridge Attacked, Approximately $5.4 Million in Assets Stolen] On May 31, the Cosmos ecosystem cross-chain bridge Gravity Bridge was reportedly attacked due to a suspected signature key leak, resulting in approximately $5.4 million in assets being stolen. The official team confirmed the security incident and suspended bridge services to conduct an investigation. They also requested validators to pause the operation of validation nodes and coordinators, as its contract keys may have been compromised.