Taiko has urged users to rush for the exits after confirming a serious security breach in its bridge system. The Ethereum layer-2 project says attackers exploited its chain-state verification mechanism and stole about $1.7 million in assets.
How The Taiko Bridge Exploit Happened
Taiko announced on X that its chain state verification mechanism has been compromised. The team warned users not to trust the security of any bridges on Taiko and urged them to “withdraw their funds from all bridges deployed on Taiko immediately.”
According to security firm Blockaid, the attacker abused a flaw in how the bridge validated source signals. The bug caused Ethereum to treat message proofs as valid even though Taiko had no matching legitimate proofs. This gap allowed the exploiter to register fake bridge messages and later redeem them for real tokens from the ERC‑20 vault.
PeckShield and Lookonchain estimate that the attacker drained roughly $1.7 million in assets before the contracts were suspended. ValueTheMarkets reports that the haul included about $2 million in Taiko’s native token, TKO, along with a mix of USDC and ETH. PeckShield also tracked 1.99 million TAIKO tokens, worth just under 200,000 dollars, moving to the MEXC exchange shortly after the exploit.
Network And Exchange Response
Taiko said it has paused block production and halted its L1 cross‑chain bridge and ERC‑20 vault while it investigates. The project and its security partners are now tracing several attacker addresses across chains and reviewing whether any funds can be frozen or recovered. Korean media reports that exchanges such as Upbit and Bithumb have temporarily suspended TAIKO deposits and withdrawals as a precaution.
Taiko stressed that users should treat all bridges on the network as unsafe until further notice. The project said they should keep only small amounts needed for routing once the bridges reopen.
As the post-mortem continues, the exploit is adding fresh pressure on rollup projects. It also pushes bridge designers to harden verification layers between L2 networks and the Ethereum mainnet.
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