Feb 21, 2026
1 new drain.
New
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Critical◐Partly contained
IoTeX ioTube bridge drained of about $4.4M after attacker abused a compromised employee machine
On 21 February 2026 an attacker who had compromised an IoTeX employee's machine, reportedly through social engineering, upgraded the ioTube bridge's Ethereum-side Validator contract to a malicious version. That let them drain about $4.4M in bridge reserves (WBTC, ETH, USDC, USDT, DAI and others) and mint 410M CIOTX. IoTeX froze about 45M IOTX in attacker wallets, paused its chain for three days and opened a claims portal for affected users.
IoTeX ioTube bridge (Ethereum side)·Ethereum·$4.4M stolen·Since Feb 21, 2026·