Ethereum Layer 2 network Taiko has suspended block production after confirming a breach in its chain state verification mechanism, leaving the network offline while engineers investigate the issue. The team said the halt will remain in place until the root cause is identified and resolved, with no timeline yet provided for restoration.
Taiko warned users that funds held in connected bridges are no longer secure and urged immediate withdrawals. It also asked trading platforms to pause deposits of its native TAIKO token to limit further exposure. Several exchanges have already halted deposit and withdrawal services following the announcement.
Exploit linked to bridge verification flaw
Security firm Blockaid traced the incident to a flaw in the bridge’s source-signal proof validation. According to its analysis, manipulated message proofs were mistakenly verified on the Ethereum mainnet, allowing unauthorized bridge transactions and asset withdrawals.
The exploit targeted assets held in the network’s ERC20 vault, effectively tricking the system into processing illegitimate messages. All block proposers stopped producing new blocks shortly after the breach was detected.
Losses estimated up to $1.7 million
Initial estimates placed the losses at around $1 million, but blockchain analytics firm PeckShield later revised the figure to approximately $1.7 million. The firm reported that 1.99 million TAIKO tokens, valued at about $169,702, were transferred to another wallet.
Further on-chain tracking indicates that some of the stolen funds were moved toward centralized platforms, while the attacker’s primary wallet still holds roughly 870 ETH, worth about $1.52 million. Taiko has shared wallet addresses linked to the exploit to support tracking efforts.
Market impact and network background
The incident has added downward pressure on the TAIKO token, as halted deposits and withdrawals on major trading platforms constrain liquidity. Short-term price movements are likely to remain sensitive to updates on the investigation and recovery efforts.
Taiko operates as a based rollup on Ethereum, relying on mainnet validators for sequencing. The network launched in May 2024 after two years of development.
Broader risks around cross-chain infrastructure
The breach highlights ongoing vulnerabilities in cross-chain bridge systems, which remain frequent targets in decentralized finance. These systems rely on complex validation mechanisms that can introduce exploitable weaknesses if not rigorously secured.
Common risk areas include:
- Message verification logic and proof validation
- Smart contract design and audit gaps
- Asset custody mechanisms across chains
- Monitoring and response to abnormal activity
Taiko has not yet outlined a recovery plan or potential restitution, and the investigation remains ongoing.
Concerned about bridge exploits and Rollup risks? Deepen your understanding with our comprehensive Layer 2 blockchain guide today.
Disclaimer: The content on this page is provided for general informational purposes only and does not represent the views or financial advice of Toobit. We make no guarantees regarding the accuracy or completeness of this information and shall not be held liable for any errors, omissions, or outcomes resulting from its use. Investing in digital assets involves risk; users should independently evaluate their financial situation and the risks involved. For further details, please consult our Terms of Service and Risk Disclosure.
