What happened
On February 21, 2026, the ioTube bridge used by IoTeX was exploited, allowing unauthorized CIOTX minting on Ethereum. IoTeX stated that its Layer 1 chain, consensus, and native IOTX token were unaffected.
How it happened
Because attacker-minted CIOTX on Ethereum could propagate to Base and Solana, the approved remediation permanently shut the affected bridge paths and established a claims process for legitimate holders.
Protocol details
Evidence
Understand the attack patterns
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