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Archie described self-custody as under pressure. Simon Dixon separated the breaches: Coldcard’s passphrase-generation flaw and compromised Ledger reseller devices led to Bitcoin being stolen, while Trezor’s email-vendor breach exposed customers’ personal details, not wallet funds.
Simon Dixon said the Coldcard breach could have been a long-term operation but offered no proof. He advised against using Coldcard again, citing the breach and the company account’s dismissive response; he judges organizations by their incentives and funding rather than presumed intent.
Rick Messitt warns that hardware wallets and self-custody methods can fail in ways users did not anticipate; he cited recent Coldcard concerns about random-number generation and reports of unusual Ledger hardware. He also notes custodial products create counterparty risk and Bitcoin can remain difficult to spend without regulated on-ramps.
Rob Hamilton says the Coldcard theft began overnight after Kimi K3 became open weight on July 27; by July 30, users were reporting losses. A sweep of many old wallet addresses pointed to an entropy flaw, not a Bitcoin protocol failure.
Rob Hamilton calls the Coldcard entropy flaw unacceptable and says the available evidence points to an engineering error, not a deliberate backdoor. He says maintainers sometimes dismiss reports defensively, and that stronger security culture requires treating reports as useful even when they prove false.
Parker Lewis said hardware and supply-chain incidents involving Coldcard and Ledger damage holder confidence, but Bitcoin’s lack of bailouts is part of its design: users and firms bear their own losses. He also cited an unnamed exchange hack that reportedly lost more than the two incidents combined.
Kevin says Coldcard's RNG bug was especially alarming because users assumed a well-known hardware wallet had been reviewed and tested. He faults the company for changing its license and dismissing researchers' reports instead of offering meaningful recognition, which discouraged further scrutiny.
Coldcard official social media and founder NVK Telegram accounts suffered security compromises, broadcasting links to a fake seed migration page. Coldcard reported credentials and offline two-factor authentication remained secure while requesting account support escalation.
Ethereum researcher Justin Drake warned users to enter bunker mode, claiming AI could break wallet elliptic curve mathematics within months. David Bennett rejects the panic, noting the Cold Card hack stemmed from faulty random number generators, not cracked cryptography.
A victim of the recent Coldcard ledger derivation vulnerability successfully recovered 20 Bitcoin via the Crypto Recovery Trust. The return was facilitated by UK law firm Edmunds Marshall McMahon and the White Hat research group DART.
The Coldcard low entropy security exploit severely compromised users who believed they were practicing high-security self-custody. Thomas Pacquia suggests establishing a community-led victim fund through OpenSats to support those who lost their life savings.
Marty Bent criticizes Blockstream for poor crisis communication during the Liquid Network exploit. The incident, paired with Coldcard's move away from open-source licensing, underscores how restricting code access limits independent security developer audits.