Taiko paused its Ethereum layer-2 network early Monday after an attacker drained roughly $1.7 million from the project's bridge. The exploit exploited forged withdrawal proofs — the same class of vulnerability behind this year's largest bridge hacks. The team moved quickly to contain the damage, but Taiko's token still shed 10% in the hours after the news broke.
Forged proofs, familiar flaw
The attacker manipulated the bridge's verification logic to submit fake withdrawal proofs, effectively convincing the network to release funds that weren't legitimately owed. The technique echoes the pattern seen in several high-profile bridge breaches earlier in 2026, where fraud proofs either weren't checked or could be bypassed. Taiko hasn't disclosed exactly which function was abused, but the core issue — a failure in proof validation — is one the L2 space has been grappling with for months.
Fast plug, limited bleed
Taiko's engineering team halted the network within minutes of detecting the anomalous withdrawals, freezing the bridge contract before the attacker could extract more. The $1.7 million take is relatively modest by crypto-bridge standards, and the team said user funds on the L2 itself were not affected. Still, the market reaction was swift: Taiko's native token dropped 10% on the day, reflecting the broader unease around L2 security. The exchange where the token is most actively traded saw a spike in sell orders shortly after the announcement.
What Taiko is doing now
The team is working on a fix and expects to reopen the network within 48 hours, pending an internal audit of the patched bridge contract. Taiko has not yet said whether it will seek to recover the stolen funds or offer compensation to affected users. The incident adds to a growing list of L2 bridge exploits this year, and users are likely to scrutinize the post-mortem for signs that the fix addresses the root cause — not just a band-aid on the validation logic. A full report is promised by the end of the week.
