Arbitrum
2 incidents, 1 live. 28 days since the last new one.
2 drains in the last 12 months
2 drains in the last 12 months
2 drains in 2026
Live
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Critical✓Contained
Bitget hot and warm wallets drained of $387.5M after zero-day in third-party security appliances
Attackers exploited a zero-day in two third-party security appliances at exchange Bitget, moved on to its production wallet job server and used a custom withdrawal tool to drain hot and warm wallets on 24-25 September 2026. The confirmed loss is about $387.5 million (first reported as $351.6M) across Ethereum, Arbitrum, Avalanche, Optimism, BSC, Base and the XRP Ledger. Bitget's CEO blamed North Korean hackers, and Bitget said cold wallets and private keys were not compromised. Hacken's Q3 figures say about $387M was covered by Bitget's user protection fund.
Bitget exchange hot and warm wallets·Ethereum, Arbitrum, Avalanche, Optimism, BNB Chain, Base·$388M stolen·Since Sep 24, 2026·
Past
February 2026 1
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Medium◐Partly contained
Hijacked Arbitrum DAO X account posts fake 'snapshot confirmed' airdrop linking to phishing site
On 3 February 2026 attackers took over Arbitrum DAO's official governance account on X (@arbitrumdao_gov) and posted a fake 'Arbitrum snapshot confirmed' airdrop linking to gov-arbitrum[.]com, a lookalike site with a 'Connect Wallet' prompt. Arbitrum told users not to click links from the account and said the protocol and funds were not affected. No losses had been reported at the time.
Arbitrum DAO followers on X·Arbitrum·Since Feb 3, 2026·
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