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Bitget Loses $387.5 Million as Hackers Forge Withdrawals and Move Funds into Bitcoin

The breach exposed a third-party authorization flaw that let attackers approve withdrawals and rapidly convert assets into Bitcoin faster than issuers could freeze them.

Overview

  • Bitget says attackers exploited a vulnerability in a third-party security product on Sept. 24 to submit forged withdrawal commands without stealing private keys or touching cold wallets.
  • Investigators and on‑chain analysts report roughly $387.5 million was taken and that about $342 million remained in attacker-controlled wallets after tracing, with roughly 3,386 BTC concentrated as of late September.
  • Security firms traced large pass-through flows through cross-chain services, with BlockSec estimating about $269 million moved via THORChain before consolidation into Bitcoin and subsequent use of mixers like CoinJoin.
  • Issuers and protocols froze only about $840,000 in linked funds, and THORChain declined Bitget’s request to block attacker addresses, which analysts say shows limits to selective freezes on decentralized rails.
  • Attribution is contested: Chainalysis links most stolen XRP to DPRK-associated activity but law enforcement has not publicly confirmed that finding; Bitget says its $464 million protection fund will cover customer losses and has opened a bounty and forensic hunt for recoveries.