取引所インシデント

Bitget temporarily paused withdrawals as a precaution while reviewing the September 24 wallet security incident. A phased restoration plan was then announced, with BTC withdrawals confirmed open again on September 28 and broader restoration scheduled through October 2.

Bitget said its security systems detected unauthorized transfers at 18:31 UTC affecting a limited portion of its hot and warm wallet infrastructure. The exchange later revised the affected amount from approximately USD 351.6 million to approximately USD 387.5 million after classifying additional affected assets on Zcash and TRON. Bitget later said attackers exploited a vulnerability in a third-party security product to steal intranet access credentials and forge withdrawal commands that bypassed risk verification; private keys were not compromised.

Bloomberg reported, citing people familiar with the matter, that federal prosecutors were investigating whether Binance violated U.S. sanctions on Iran and whether it knowingly allowed prohibited trading on its platform. Reuters reported that a source confirmed the probe.

IZAKA-YA announced that service would end for all customers residing in Japan regardless of nationality and for Japanese nationals living abroad. It said new registration and new lending would stop for the affected population, the Japanese-language site would close at the end of September, and the withdrawal procedure would remain available until asset-return handling was completed.

The U.S. Treasury's Office of Foreign Assets Control added BITBANK, also identified as BITBANK3, to the Specially Designated Nationals List under Executive Order 13902. Treasury identified BitBank as an Iranian digital-assets exchange controlled by sanctioned financier Babak Zanjani and alleged that it formed part of a sanctions-evasion network and facilitated Bitcoin transfers to the Islamic Revolutionary Guard Corps.

CoinEx announced that it would cease operations through a staged wind-down: new registrations and new non-spot subscriptions/orders stopped on September 15, non-spot services were scheduled to cease on September 22, spot trading and CoinEx Smart Chain / OneSwap on September 29, and the exchange platform after the withdrawal window on December 22, 2026.

OneSwap announced that all services would discontinue at 02:00 UTC on September 29, 2026 in connection with the shutdown of CoinEx Smart Chain and the CoinEx exchange platform.

After multiple users reported withdrawals remaining pending or processing for unusually long periods, WOO X said it was reviewing affected cases and system status and that some requests might remain under review or on-chain processing. The statement did not announce a platform-wide withdrawal suspension or identify a security breach or solvency issue.

Japan's Financial Services Agency published that it had issued a warning to Izakaya Limited concerning unregistered crypto-asset exchange business in Japan.

Thailand's Securities and Exchange Commission filed a criminal complaint against three Holdstation developers and principal operators, alleging that the Holdstation application operated a fee-charging digital asset brokerage business without a license and solicited users through Thai-language services.

The BLND-USDC Comet AMM pool used by Blend's backstop was exploited through an accounting flaw that allowed same-asset USDC-to-USDC swaps to corrupt reserve calculations. SlowMist records approximately 717,518.92 USDC in losses. The affected backstop was subsequently paused while recovery and remediation work proceeded.

IZAKA-YA stated that suspected illicit-fund inflows or money-laundering signals had been identified in some transactions and that affected accounts were temporarily restricted from transfers and withdrawals while being investigated. The operator stated that this was not a uniform platform-wide halt and that ordinary transfers and withdrawals could also take longer during enhanced monitoring.