โ ๏ธ $75M Drained From Coldcard Wallets โ Largest Hardware Wallet Hack in Bitcoin History
About 2,673 Bitcoin addresses were emptied of roughly $75M in BTC over just 41 minutes on July 30 โ and the physical devices were never touched. A 2021 firmware bug in Coldcard routed seed generation to a weak software PRNG instead of the hardware RNG, letting attackers reconstruct private keys offline. Coinkite shipped a patch, but any seed created during the vulnerable window is permanently compromised โ affected users must migrate funds to a freshly seeded wallet. Not financial advice. Did you set up a Coldcard between 2021 and the fix?
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