#What is the current status of Taiko's cross-chain bridge?
The Taiko cross-chain bridge has successfully resumed operations following a thorough recovery from an exploit that occurred on June 21. This exploit resulted in the loss of approximately $1.7 million from its bridge and ERC20 Vault contracts. Fortunately, the team confirmed that no user funds were affected during this incident.
The reopening of the bridge is a significant milestone, marking the completion of a systematic recovery effort. This process involved halting the entire network, restoring the bridge reserves to a full 1:1 backing, and conducting an independent security review to ensure the system's integrity before reopening.
#What caused the exploit on June 21?
The exploit was linked to a vulnerability in Taiko's chain-state and proof verification processes. A compromised SGX signing key was inadvertently published on GitHub, granting attackers the capability to forge withdrawal proofs and withdraw funds from the bridge. The attacker managed to steal around $1.7 million, later converting approximately 2 million TAIKO tokens into cash worth about $170,000 at the time via the MEXC exchange.
As a direct response to this breach, the Taiko team took decisive action, ceasing block production, pausing the bridge and the ERC20 Vault, and advising exchanges to suspend TAIKO deposits temporarily.
#How did Taiko execute their four-stage recovery plan?
In outlining their recovery strategy by June 29, Taiko's team designed a robust four-stage recovery plan to mitigate the impact of the exploit. The first stage involved addressing the attack vector by fixing the flawed proof verification process and ensuring the compromised SGX key could no longer be exploited. The next step was to replenish bridge reserves to achieve full 1:1 collateralization before reopening. The third stage restored Layer 2 network activity to facilitate normal on-chain operations, while the final step involved cautiously reopening the bridge under controlled quotas rather than allowing unrestricted access immediately.
By June 30, Taiko's network was fully operational again, with all assets verified to be backed at an identical 1:1 ratio. A Security Council supervised the final unpausing of the bridge, and an independent security review was conducted, confirming the readiness for reopening.
#How did this incident affect the market and TAIKO token?
In the aftermath of the exploit, TAIKO token experienced a significant drop of approximately 10%, hitting near all-time lows around $0.07. Despite this setback, trading liquidity for TAIKO maintained relative stability throughout the incident.
#What broader challenges do cross-chain bridges face?
Cross-chain bridges are increasingly recognized as one of the most critical security challenges within the cryptocurrency market. In 2026 alone, incidents related to bridges led to losses exceeding $340 million. Taiko's specific vulnerability highlighted an operational security lapse rather than a fundamental flaw within the cryptographic or consensus mechanisms. Importantly, since no user funds were lost, and full recollateralization was achieved before reopening, the bridge currently operates under controlled access quotas to enhance security measures going forward.