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Coldcard wallet flaw causes $114M bitcoin loss; users urged to move funds immediately

Market News
04 Aug 2026
Coindesk
View Source
Bearish
pluang ai news

Coldcard, a bitcoin cold wallet maker, warns users to urgently move their funds due to an ongoing exploit that has already drained about $114 million from vulnerable wallets. The flaw affects certain Mk3, Mk4, Mk5, and Q models running specific firmware versions, allowing attackers to guess weak seed keys and steal bitcoin. Wallets created with the dice-roll option remain safe. Users must update firmware, create new wallets, and transfer their bitcoins to avoid losses. The exploit has been active since 2021, and the company stresses immediate action to protect assets.

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