Taiko Network Halts Operations After Bridge Exploit, Token Price Drops

Taiko, an Ethereum-focused layer-2 (L2) network, has announced a halt to its operations and urged users to withdraw assets from its bridges after an exploit on one of its bridge protocols. Approximately $1.7 million worth of crypto assets were reportedly stolen in the incident. This security breach originated from a vulnerability in Taiko's chain state verification mechanism, a flaw identified as a root cause behind some of this year's largest bridge hacks.

The attack unfolded when a malicious actor managed to forge withdrawal proofs, which were then accepted as valid on the Ethereum mainnet (L1). According to analysis by security firm Blockaid, these fraudulent proofs were accepted despite the absence of legitimate corresponding transactions on the Taiko blockchain. This enabled the attacker to execute unauthorized asset withdrawals from the ERC-20 vault. Blockchain security firm BlockSec's initial investigation suggests that an exposed signing key for Raiko, Taiko's proof production system, on GitHub might have been the likely cause.

Following the exploit's discovery, the Taiko team swiftly responded by halting block production and pausing affected systems. While users were initially strongly advised to withdraw funds from bridges, this warning was later reversed as the incident was contained within hours. Of the stolen assets, approximately $1.5 million was identified as Ether (ETH), with 1.99 million Taiko (TAIKO) tokens, valued at around $189,000, being transferred to the MEXC exchange, as tracked by on-chain analytics firms PeckShield and Lookonchain.

This development underscores the critical importance of bridge security within the crypto markets, particularly in the decentralized finance (DeFi) sector. Taiko's native token, TAIKO, experienced a significant price drop following the news, losing a substantial portion of its value. Similar bridge attacks have led to hundreds of millions of dollars in losses across the crypto ecosystem this year, highlighting the need for robust stress testing of layer-2 solutions.

The Taiko incident is one of over 20 security breaches reported in the crypto market in June 2026. Larger attacks this month included the Humanity Protocol, which lost over $30 million, and the Syscoin Bridge, with losses exceeding $8 million. As bridges are fundamental infrastructure enabling asset transfers between different blockchains, such attacks can erode overall market confidence and raise concerns among investors.

Market analysts note that even projects like Taiko, with rapid response capabilities, remain vulnerable to sophisticated attacks, indicating persistent security gaps in bridge technologies. In the coming period, enhanced verification mechanisms and increased security audits for bridges are anticipated. Furthermore, Taiko's request to centralized exchanges to suspend TAIKO deposits is seen as a proactive measure to prevent additional risks.