Taiko Upbit Bithumb delisting concerns escalated after South Korea’s largest exchanges added the TAIKO token to their watchlists following a $1.7 million bridge exploit. Investors now monitor whether the Ethereum Layer 2 project can resolve security vulnerabilities before facing full removal from trading platforms.

Taiko Bridge Exploit Details

The security incident that triggered exchange alerts involved a sophisticated attack on Taiko’s cross-chain bridge infrastructure, forcing the network to halt block production.

How the Attack Unfolded

An attacker forged withdrawal proofs to drain approximately $1.7 million from Taiko’s bridge connecting to Ethereum. Fake withdrawal requests were accepted on Ethereum without matching deposits on Taiko’s chain, allowing the exploiter to drain funds from the bridge and its token vault before the team froze activity.

Security firm BlockSec traced the likely root cause to a leaked Raiko SGX enclave signing key exposed on GitHub. This key should have remained sealed inside secure hardware to ensure proof validity. With access to it, the attacker enrolled fraudulent provers and signed fake proofs that Taiko’s verifier accepted.

Containment and Response

Taiko urged all users to withdraw from every bridge on the network and asked centralized exchanges to suspend TAIKO token deposits. Block producers stopped creating new blocks during the investigation. By approximately 2 a.m. ET, the team declared the exploit contained, with withdrawals through the main bridge and token vault fully stopped.

Exchange Delisting Watchlist Mechanism

South Korean exchanges follow strict investor protection protocols when security incidents threaten user funds. Both Upbit and Bithumb stated they will thoroughly evaluate the scope, impact, and project resolution process of the security incident. During this period, TAIKO remains tradeable but carries heightened risk warnings. Exchanges may lift the alert status if they conclude the project has adequately addressed its risks.

Conversely, if problems persist or resolution proves insufficient, trading support may terminate and the token could face complete removal from platforms. Market experts note that assets placed on delisting watchlists often experience significant short-term volatility. The exchanges cited potential harm to users from the security breach in wallets or distributed ledger infrastructure where the token was issued, transferred, or stored. This precautionary measure aligns with South Korea’s stringent cryptocurrency regulatory framework designed to shield retail investors from unverified risks.

Broader Bridge Security Context

The Taiko exploit reflects a pattern of cross-chain messaging vulnerabilities that have cost hundreds of millions in 2026.

Similar Exploits in 2026

Forged cross-chain messages drained $292 million from Kelp DAO’s bridge in April and $11.4 million from the Verus-Ethereum bridge in May. Each employed the same attack vector where one chain accepts fraudulent instructions from another. Bridges have produced over $340 million in losses across at least 14 exploits this year, making them the costliest target in crypto.

Why Taiko’s Loss Stayed Contained

The dollar loss remained relatively small because Taiko’s team detected and froze the exploit within hours. Unlike larger bridge hacks where attackers had extended windows to drain funds, rapid containment limited damage. The exploiter moved approximately 2 million TAIKO, worth roughly $170,000, to an account on the MEXC exchange before activity halted.

Market Impact and Next Steps

TAIKO token price dropped 10% following news of the exploit and subsequent exchange watchlist additions.

Taiko, which launched on Ethereum in May 2024, said it will release a full incident report on Monday in Asian trading hours. The investigation results and remediation steps will heavily influence whether Upbit and Bithumb maintain or lift their delisting alerts.

Investors should monitor official announcements from both exchanges and the Taiko team. Assets on delisting watchlists face heightened uncertainty, and trading during this period carries substantial risk.

Conclusion

The Taiko Upbit Bithumb delisting watchlist situation underscores the persistent security challenges facing cross-chain bridges in 2026. South Korean exchanges prioritized investor protection by adding TAIKO to their alert systems following the $1.7 million exploit, giving the project a window to demonstrate resolution. With bridges accounting for over $340 million in losses this year, the incident reinforces why exchanges apply heightened scrutiny to tokens with security vulnerabilities. Traders should await the full incident report and exchange decisions before considering any positions in TAIKO.

FAQs

1. Why did Upbit and Bithumb add TAIKO to their delisting watchlists?

The exchanges cited a security incident within the Taiko ecosystem that could potentially harm users. A bridge exploit allowed an attacker to drain approximately $1.7 million, triggering investor protection protocols.

2. How did the Taiko bridge exploit work?

An attacker forged withdrawal proofs by accessing a leaked signing key exposed on GitHub. This allowed fake withdrawal requests to be accepted on Ethereum without matching deposits on Taiko’s chain, draining funds from the bridge.

3. What happens when a token is on a delisting watchlist?

The token remains tradeable but carries heightened risk warnings. Exchanges evaluate whether the project addresses the identified risks. If resolved satisfactorily, the alert lifts. If problems persist, the token may face full delisting.

4. How much was lost in the Taiko bridge exploit?

The team estimates losses at approximately $1.7 million before they stopped the outflows. The attacker moved about 2 million TAIKO tokens, worth roughly $170,000, to an exchange before activity was frozen.

5. Is Taiko still operational after the exploit?

Taiko halted block production and urged users to withdraw from all bridges. The team later declared the exploit contained and said withdrawals through the main bridge and token vault were fully stopped.