Hardware wallet maker tells users to check model-specific advisories, update firmware and generate a new seed phrase as it warns the threat has not ended.
Coldcard has urged users to treat an ongoing security threat as an emergency and move funds as soon as possible. The Bitcoin hardware wallet brand said users should review the security notice for their specific device model, update firmware, create a new seed (wallet recovery phrase), and carefully migrate assets held in affected wallets. The company also asked the community to help spread the warning, particularly to users who are not frequently online and may miss the update. Coldcard said the threat remains active and urged users to stay alert and act quickly.