Canadian Bitcoin holders have emerged as the largest group affected by the ongoing attack on the Coldcard hardware wallet, accounting for 25% of all associated losses. Analysts note that such a high regional concentration of losses aligns with the strong local presence of Coldcard's parent company, Coinkite, whose headquarters are located in Toronto.
According to a Chainalysis visual analysis, Australia ranks as the second most severely impacted country in the attack, accounting for 15% to 20% of the total damage. Meanwhile, the United States and Thailand follow closely with losses in the range of 10% to 15%. While the exploit has primarily hit English-speaking countries and early Bitcoin-adopting jurisdictions, the data indicates broad global consequences across Western Europe, Latin America, and key African crypto hubs such as Nigeria and South Africa.
The total value of assets stolen in the incident has reached $116 million. In its analysis of the incident, Galaxy Research identified a firmware update released in March 2021—specifically the implementation of a new random number generator—as the single point of failure that made the attack possible.
"The issue was that it was wired incorrectly and defaulted to using a weaker generator. The failure occurred silently, without any warnings. No one knew their private keys were being generated with low entropy," stated Galaxy Research. "Five years later, an attacker drained $70 million from 1,200 wallets in 41 minutes."
Explaining why standard checks failed to detect this error for over five years, Natalie Newson, Senior Blockchain Investigator at CertiK, reported that the root cause was a specific configuration error: the MICROPY_HW_ENABLE_RNG variable was set to zero.
"For a static #ifndef check, a macro set to 0 is still considered defined," Newson explained. "The security check returned true, suppressing the #error protection and allowing the build system to proceed as if everything was configured correctly."
Incident Response and Emergency Remediation Protocols
To prevent such silent fallbacks to software pseudo-randomness, Newson urged manufacturers to review their architectural standards. "The most robust control is to remove the fallback mechanism from the production environment and have exactly one approved RNG provider," she emphasized, noting that the entire path from entropy sourcing to seed generation must strictly fall within validation boundaries defined by the NIST FIPS 140-3 standard.
Addressing the operational risk management related to rushing out emergency patches during active automated exploitation, Newson stressed that incident response must prioritize user notification alongside technical testing.
"The priority should be immediate notification about the scope of the vulnerability, identifying affected users, and providing clear mitigation guidance, while thoroughly vetting any patch before release," stated Newson, adding that transparency is no less important than the fix itself.
For non-technical users holding compromised seed phrases and fearing bricking their devices during emergency firmware updates, Newson recommended a strict remediation protocol: first, users should acquire a reliable hardware wallet, generate a new seed phrase offline, and verify the setup with a small test transaction. They should then move all remaining funds to the newly verified configuration before attempting a firmware update on the original device.
Newson also urged users to avoid creating a "single point of failure" by using hardware wallets from different manufacturers to distribute risk across multiple accounts.
An Inflection Point for Self-Custody Philosophy
This incident has forced the self-custody industry and its advocates to confront fundamental questions about prevailing security models. Critics point to the sudden disappearance of dormant, long-held assets as proof that offline execution alone does not guarantee absolute protection.
Nanak Nihal Khalsa, co-founder of Human.tech, stated that this incident underscores the immutable reality of third-party risks within hardware wallet ecosystems.
"The slogan 'Not your keys, not your coins' misses a crucial fact: you are always delegating trust to third parties, even with self-custody. This just adds another piece of evidence that self-custody doesn't change that fact," remarked Khalsa, warning that emerging threat vectors, such as AI-based exploits, are likely to exacerbate these risks.
CertiK's Newson echoed concerns about single-signature setups, noting that mass adoption requires systems built with graceful degradation in mind, where a single mistake—be it from the user or the vendor—does not result in the loss of a user's lifetime savings.
"Single-signature self-custody leaves no room for error," said Newson. "Users relying on a single device are trusting the physical hardware, the code and all its dependencies, and the QC checks meant to catch any issues."
Consequently, industry consensus is shifting towards multi-vendor configurations, utilizing multi-signature or threshold signature schemes (MPC) as a mandatory baseline standard.
"Yes, this should be the default baseline standard," concluded Newson. "The goal is to move from 'trust in one device' to ensuring no single compromised component or party can move funds. In practice, signing keys or threshold signature shares should span independent domains of organizational and technological failure so that no single provider can recover the key or authorize a transaction on its own."
