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Morning Edition · Wednesday, August 12, 2026Published at 1:36 AM EDT · New York
Casa Says 233,000 Bitcoin Moved to New Storage After the Coldcard Firmware Flaw
Chief executive Nick Neuman puts the defensive migration at between ten and one hundred times the roughly 1,816 bitcoin the attackers took.
Nick Neuman, chief executive of the multisignature custody firm Casa, says roughly 233,000 bitcoin moved into new storage arrangements after the Coldcard hardware-wallet exploit, an amount he places at ten to one hundred times what the atta…
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Implementation Bugs, Not Just Exploits, Threaten Custody
Cryptographic implementation errors in wallets and signers (biased nonces, reused randomness, faulty derivation) keep surfacing as a distinct custody risk alongside smart-contract exploits, eroding the assumption that certified hardware protects keys.
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