How bitcoin cold wallets lost $70 million in an attack that never touched the devices

Galaxy Research said weak seed generation let an attacker recreate likely private keys offline, sweep more than 1,000 BTC from nearly 1,200 wallets and continue searching without.

OttoTrader publishedAug 1, 2026, 6:08 AM

Original source timeAug 1, 2026, 5:55 AM

UpdatedAug 1, 2026, 6:08 AM

Source publicationCoinDesk

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Brief context

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What changed

The setup

Galaxy Research said weak seed generation let an attacker recreate likely private keys offline, sweep more than 1,000 BTC from nearly 1,200 wallets and continue searching without ever accessing the devices How bitcoin cold wallets lost $70 million in an attack that never touched the devices

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Trader relevance

Market context around BTC can change volatility, liquidity, or sentiment. The concrete detail to watch is galaxy Research said weak seed generation let an attacker recreate likely private keys offline, sweep more than 1,000 BTC from nearly 1,200 wallets and continue searching without ever accessing the devices

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Use this as watchful context from coindesk.com. Watch whether how bitcoin cold wallets lost $70 million in an attack that never touched the devices confirms momentum, invalidates active bias, or changes timing.

Assets

BTC

Source: CoinDesk on coindesk.com.

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