Coldcard Wallet Exploit Losses Near $114M as Bitcoin Sweep Attacks Surge

Cumulative losses from Coldcard hardware wallet vulnerabilities approach $114 million. Single-signature Bitcoin addresses face active sweep attacks, while multi-sig wallets remain unaffected.

Woofun AI reports that cumulative losses from security incidents exploiting Coldcard hardware wallet vulnerabilities are nearing $114 million. Galaxy Research Head Alex Thorn identified an ongoing wave of Bitcoin 'sweep' attacks targeting Coldcard wallet addresses. The exploits primarily compromise single-signature wallets, with no reported impact on multi-signature setups. Affected users are advised to immediately verify addresses generated by Coldcard devices and transfer remaining assets. While direct victim reports are absent and assessments rely on transaction data, some attack transactions remain unconfirmed.