Shares of the Ethereum rollup token Taiko, known as TAIKO, fell about 11% over the past 24 hours, according to market data cited in the report, as a security exploit triggered a partial shutdown and renewed concern about bridge safety. The move was driven by an incident in Taiko’s chain state verification system that the protocol said could affect the security assumptions of its bridges.
Taiko confirmed that bridges deployed on its network should no longer be treated as secure and advised users to withdraw funds immediately, while it coordinated an incident response with its Security Council and ecosystem partners. The protocol also said proposers paused block production temporarily and later stopped withdrawals via the L1 Bridge and ERC20Vault to prevent additional losses.
Key takeaways
- Price move: TAIKO dropped roughly 11% in the last 24 hours, underperforming relative to the broader crypto market.
- Catalyst: A reported exploit of Taiko’s bridge message-proof verification system led to a confirmed loss of about $1.7 million.
- Immediate implication: Taiko told users to withdraw funds and warned that bridges should not be considered secure.
- Market impact: On-chain monitoring and technical indicators pointed to continued selling pressure, with analysts flagging potential renewed lows if selling persists.
What drove the move
Taiko, an Ethereum-based rollup, said a compromise affected how its chain state verification system handles bridge message proofs. In a public update on X, the protocol warned that all bridges deployed on Taiko should no longer be regarded as secure and urged users to withdraw funds immediately.
The protocol also asked centralized exchanges to suspend deposits of its native token until further notice. In its incident response, Taiko said it was working to contain the breach, pausing affected systems where possible and pursuing both technical and legal remedies.
Operationally, Taiko said proposers temporarily stopped producing new blocks while the team investigated. Around 2:08 a.m. ET, Taiko later stated that the exploit had been contained, and that withdrawals via the L1 Bridge and ERC20Vault were fully stopped to reduce the risk of further damage.
How the exploit worked
According to Taiko’s investigation, the attack traced back to a flaw in the bridge message-proof verification system. The protocol said forged message proofs were incorrectly accepted on Ethereum Layer 1 without a valid corresponding event on the source chain.
This, Taiko explained, enabled the attacker to register fake withdrawals and extract funds from the bridge and token vault.
Security firm Blockaid’s earlier analysis pointed to the same issue, describing it as a failure in source-signal proof validation. Blockaid said malicious message proofs were accepted as valid on Ethereum without matching “MessageSent” events on the Taiko chain, allowing unauthorized withdrawals.
Loss estimate and on-chain monitoring
Early estimates from Blockaid placed losses at about $1 million. Later, on-chain analytics platform PeckShield revised the figure to approximately $1.7 million, citing its own monitoring of the incident.
PeckShield also reported that the attacker moved roughly 1.99 million TAIKO tokens—worth about $169,702—to an address linked to MEXC. Taiko confirmed the $1.7 million estimate and said it is preparing a full post-mortem report.
The gap between the initial and revised loss estimates underscores how quickly incident assessments can evolve in crypto security events, where attackers may route funds across multiple addresses and platforms before investigators can fully attribute flows.
Market reaction and technical pressure
Beyond the protocol’s operational response, investors appear to be reacting to both the security risk and the prospect of further uncertainty around bridge recovery and asset safety. The token’s price action was described as bearish on shorter timeframes, with the article citing technical indicators pointing to continued downside momentum.
The report said momentum indicators were “extremely bearish,” suggesting buyers had lost control. It also cited an RSI reading of 32, indicating TAIKO was approaching oversold conditions. The article further noted that MACD lines remained in negative territory, reinforcing the downside narrative.
On that basis, the report suggested TAIKO could test levels below $0.070 in the near term. It also indicated that a daily close below that threshold could extend selling toward the $0.060 zone and potentially set a new all-time low. Conversely, if the token rebounds, it could attempt to recover toward an “efficiency level” at $0.082, with an extended rally potentially reaching a Sunday high of $0.098.
Bigger picture: bridge risk remains a focal point
Taiko’s warning to exchanges and users highlights a broader theme in crypto markets: confidence in bridge infrastructure is often central to token valuations, especially for rollups that rely on cross-layer messaging. When bridge verification fails, markets typically price in not only direct losses but also the time required for remediation, user withdrawals, and potential liquidity disruptions.
With Taiko advising that its bridges should not be considered secure and that affected systems were paused or stopped, investors will likely monitor how quickly the protocol can restore trust, deliver technical findings, and outline timelines for resuming safe withdrawals.
What to watch next includes Taiko’s full post-mortem report, updates on the remediation of the bridge message-proof verification flaw, and any follow-through actions from exchanges that paused deposits. For investors, the key near-term signal is whether trading stabilizes after the incident containment—or whether technical weakness and liquidity concerns keep pressure on the token.
