BlockSec releases preliminary analysis of Taiko attack: suspected exposure of Raiko SGX signature key on GitHub
Foresight News reported that BlockSec Phalcon has released a preliminary analysis of the Taiko security incident. The root cause may be that the SGX enclave signing key for Taiko's multi-prover component Raiko was exposed on GitHub. Attackers leveraged the exposed key to register maliciously controlled SGX instances, bypassed the proof verification mechanism, and forged state/signal proofs. Subsequently, they used the forged source signal to mark fake cross-chain messages as RETRIABLE and called retryMessage to extract canonical L1 assets from ERC20Vault.
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