Bitcoin
Small Bitcoin transfers hit highest level since FTX collapse after Coldcard hack
A suspected compromise of Coldcard wallets has triggered a surge in small Bitcoin transactions unseen since the FTX crisis in 2022.
Transfers of less than 1 BTC have jumped to their highest level since the FTX collapse, reaching roughly 39,600 BTC in small transactions on July 31, according to CryptoQuant data. The spike follows a confirmed vulnerability in Coldcard hardware wallets—a five-year-old randomness bug that weakened key generation across hundreds of devices.
Galaxy Research estimates the attack has compromised approximately 1,367 BTC spread across 4,585 addresses. Users of affected Coldcard wallets have been urged to generate new wallet seeds and transfer their funds immediately to secure their holdings.
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