Coldcard issues Mk3 seed warning after 594 BTC theft raises security concerns Coinkite warned that wallets created on Coldcard Mk3 devices running firmware versions 4.0.1 through 5.0.3 may be at risk due to a seed generation flaw. Users are advised to migrate funds immediately.

What happened

Coinkite warned that Coldcard Mk3 wallets running firmware 4.0.1‑5.0.3 may generate faulty seeds, and a recent theft of 594 BTC highlighted the risk, so users should move their funds right away.

Confirmed

Global impact / market context

A compromised seed lets attackers recreate private keys and steal funds, meaning users could lose their Bitcoin unless they quickly migrate to a secure wallet, impacting overall trust in crypto security.

Confirmed

Coldcard is a popular hardware wallet for Bitcoin, and a security flaw can affect many users who store large amounts of BTC on the device, potentially prompting broader scrutiny of hardware‑wallet safety.

Confirmed

What to watch

1. Coldcard’s release of a firmware patch that fixes the seed generation flaw and the speed at which users adopt it. Proposed
2. Potential legal or regulatory actions against hardware‑wallet manufacturers if more thefts are linked to similar vulnerabilities. Analyst inference
3. Changes in investor confidence toward Bitcoin storage solutions, which could affect demand for alternative wallets or custodial services. Analyst inference

Affected assets

• BTC — Bitcoin

Evidence

• x.com