Coldcard: Destroyed stock of vulnerable firmware, advises affected users to migrate funds as soon as possible.
2026.08.03 10:15:38
Bitcoin hardware wallet manufacturer Coldcard tweeted that the past three days have been among the most difficult in the company’s history, with some users losing years of savings. The team has been in constant contact with customers since last Friday, assisting in transferring still-secure funds and providing recovery guidance. The company has now destroyed remaining Coldcard inventory produced using vulnerable firmware and suspended shipments. Satscard, Opendime, and Tapsigner are unaffected. The released patch firmware prevents newly generated mnemonics from being impacted, but old mnemonics created on the vulnerable firmware remain at risk; users are required to create new wallets and transfer their funds. The company temporarily recommends alternative hardware wallets including Bitkey, Ledger, Trezor, Jade, and Bitbox, and urges affected users to retain their devices to support future recovery efforts.
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