Coldcard Firmware Bug Tied to $114 Million in Bitcoin Losses
AI مارکیٹ کا خلاصہ
Disclosure of a Coldcard firmware build error that reduced mnemonic randomness and enabled multi-round exploitation, with observed losses rising to ~$114M, is negative for Bitcoin custody confidence. The news can drive near-term defensive flows as affected users rotate funds, potentially increasing on-chain activity and highlighting operational security risk in self-custody hardware. While not a protocol issue, it may weigh on sentiment toward retail BTC storage practices.
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AI تجزیاتی سمجھ · BTC/USDTAI تجزیاتی سمجھ
▼ Bearish
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Coinkite, the maker of Coldcard Bitcoin hardware wallets, said in a late-July 2026 disclosure that a firmware build error introduced in March 2021 led some devices to generate recovery mnemonics from a narrower set of possibilities, weakening private-key randomness.
Researchers at Galaxy Research reported that the flaw was exploited in multiple waves. Observed Bitcoin losses rose from about $88 million to nearly $114 million over several days. After researchers warned that additional vulnerable addresses could still be attacked, many Coldcard users moved their funds.
Coldcard is a Bitcoin-only wallet that supports offline signing via microSD card, with optional QR code functionality. First launched in 2017, it has been widely viewed as one of the more security-focused Bitcoin hardware wallets.
