Approximately $4.67 million worth of tokens were drained from Secret Network after an attacker exploited an ICS-20-based smart contract used to facilitate cross-chain transfers, according to Axelar’s June 19 statement. The incident exposed another weakness in the bridge infrastructure connecting Cosmos-based blockchains, but Axelar said the issue was isolated to the Secret-side ICS-20 smart contract used in the Cosmos IBC connection between Secret and Axelar. The company said Axelar’s core protocol, other IBC connections, other chains, and other escrow accounts were not affected.