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Crypto

Fourth Wave of Coldcard Wallet Attacks Sees Over $7 Million in BTC Stolen

Guavy AI Editorial Team
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BTC
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A suspected fourth wave of attacks on Coldcard-generated Bitcoin wallets may be underway, according to blockchain researcher Alex Thorn. In about two and a half hours, almost 449 BTC was swept from hundreds of addresses.

The ongoing exploit is linked to a weak-entropy vulnerability in certain Coldcard firmware versions.

This vulnerability creates a major crypto wallet security risk and raises concerns for Bitcoin adoption and custodial trust.

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