8 stories about Coldcard from across the crypto press, curated and summarized daily. Most recent: Aug 3, 2026.
Bitcoin security expert Jameson Lopp warns that AI is making it easier for attackers to find wallet vulnerabilities. The recent Coldcard exploit shows even the most secure wallets can be compromised.
A possible fourth sweep of Coldcard wallets may push losses to $114 million. Users have minutes to act if they see their address in the mempool.
A security flaw in Coldcard hardware wallets has smaller Bitcoin holders moving funds back to exchanges for safety. This reverses the trend seen after the FTX collapse in 2022, where investors withdrew from exchanges. The exploit resulted in a loss of $89 million, according to blockchain analytics firms.
A sophisticated attack on Bitcoin cold wallets has now affected 4,500 addresses, with total losses nearing $89 million. The attacker is exploiting weak keys generated by Coldcard wallets and has shifted tactics to target smaller balances and alter how funds are collected on-chain.
Coinkite has issued a security warning for Coldcard Mk3 users, advising them to create a strong BIP-39 passphrase and move funds to a new wallet. The warning follows reports of 594 BTC stolen from affected users.
Nearly 1,200 Bitcoin addresses were drained of over 1,000 BTC, worth approximately $70 million, due to a vulnerability in Coldcard hardware wallets. Galaxy Research reports this as one of the largest Bitcoin thefts linked to a hardware flaw.
A software bug in the Coldcard hardware wallet has led to the theft of nearly 600 Bitcoin, worth around $38 million. This incident is causing some investors to question the safety of managing their own private keys and consider alternatives like Bitcoin ETFs.
Coinkite has released the Coldcard MK5, building on the MK4's dual secure element security with a larger Gorilla Glass screen, redesigned buttons, and improved NFC capabilities for smoother Bitcoin transactions.