A hardware wallet vulnerability has drained roughly $38 million worth of Bitcoin, and the device's manufacturer believes an artificial intelligence tool may have been used to discover the underlying flaw.
The Breach and Its Scale
Coinkite, the company behind the popular Coldcard hardware wallet, has acknowledged a security incident in which a key-generation flaw was exploited to siphon off tens of millions of dollars in Bitcoin. The vulnerability affected how private keys were produced, allowing an attacker who understood the weakness to potentially predict or reconstruct them.
The scale of the losses—around $38 million—underscores how devastating a single cryptographic weakness can be for users who trusted the device to safeguard their holdings. Hardware wallets are widely marketed as one of the most secure ways to store digital assets offline, making the incident particularly alarming for the self-custody community.
A flaw meant to be buried in old code became a $38 million liability once someone knew where to look.
An AI Angle to the Discovery
What makes the case especially notable is Coinkite's suspicion about how the flaw was found. The company suggested it was likely that an attacker leveraged AI to comb through earlier versions of its open-source firmware, spotting a vulnerability that had gone unnoticed by human reviewers.
Because Coldcard's firmware is open source, its full code history is publicly available for anyone to examine. That transparency is generally considered a strength, as it invites community scrutiny and independent audits. But it also means malicious actors can study every past revision in search of exploitable mistakes.
The theory points to a growing concern across the software world: that AI models capable of rapidly analyzing large codebases could accelerate the discovery of security holes, giving attackers a powerful new tool for probing legacy code.
What It Means for Users
The incident serves as a reminder that even trusted, purpose-built security hardware is not immune to flaws, especially those rooted in older firmware versions. Users are typically advised to keep devices updated and to follow manufacturer guidance closely.
- Keep hardware wallet firmware current with the latest official releases.
- Treat open-source transparency as a double-edged sword that benefits both defenders and attackers.
- Watch for official communications from Coinkite regarding affected versions and remediation steps.
As AI tools become more capable of scanning and interpreting code at scale, both developers and security researchers may need to