#coldcardtheftinvestigationadvances
🔴 BREAKING: The "Unhackable" Coldcard Wallet Just bled $118 Million
We thought cold wallets were bulletproof. Turns out, a 5-year-old code bug just proved otherwise. 😱
What Happened?
Between July 30 – August 6, 2026, attackers drained **1,778 BTC (~$118M)** from over **8,600 Coldcard addresses**. One victim did everything right—offline wallet, split seed phrases, bank vaults—yet lost 18.25 BTC.
The Flaw: A 2021 Code Update
In March 2021, Coinkite pushed firmware v4.0.1. A build config error disabled the hardware random generator, rerouting seed generation to a **predictable software generator**. Entropy collapsed from 128 bits to as low as **40 bits**—crackable by modern hardware. The bug went undiscovered for 5 years.
The Attack
Starting July 30, attackers systematically brute-forced weak private keys. In just **41 minutes**, they swept over 1,000 BTC from 1,000+ wallets. At least **15 attackers** exploited this vulnerability.
**The Investigation**
Block's Bitkey team traced the first attacker to a **paid blockchain data service account**—internal logs matched the theft pattern with "extraordinary specificity". Galaxy Research analyst Alex Thorn confirms the **FBI may have already identified Wave 1 attacker**. **1,082.65 BTC (~$118M) still sits untouched** in the attacker's address.
The Takeaway
Hardware ≠ Unhackable. Security starts at seed generation, not just offline storage.
If you own a Coldcard (MK2 or later, firmware v4.1+): MOVE YOUR FUNDS NOW. Coinkite has released a patch.
*Not financial advice. DYOR.*
$ARB
$WLD
#ColdcardTheftInvestigationAdvances #Bitcoin #CryptoSecurity #HardwareWallet
🔴 BREAKING: The "Unhackable" Coldcard Wallet Just bled $118 Million
We thought cold wallets were bulletproof. Turns out, a 5-year-old code bug just proved otherwise. 😱
What Happened?
Between July 30 – August 6, 2026, attackers drained **1,778 BTC (~$118M)** from over **8,600 Coldcard addresses**. One victim did everything right—offline wallet, split seed phrases, bank vaults—yet lost 18.25 BTC.
The Flaw: A 2021 Code Update
In March 2021, Coinkite pushed firmware v4.0.1. A build config error disabled the hardware random generator, rerouting seed generation to a **predictable software generator**. Entropy collapsed from 128 bits to as low as **40 bits**—crackable by modern hardware. The bug went undiscovered for 5 years.
The Attack
Starting July 30, attackers systematically brute-forced weak private keys. In just **41 minutes**, they swept over 1,000 BTC from 1,000+ wallets. At least **15 attackers** exploited this vulnerability.
**The Investigation**
Block's Bitkey team traced the first attacker to a **paid blockchain data service account**—internal logs matched the theft pattern with "extraordinary specificity". Galaxy Research analyst Alex Thorn confirms the **FBI may have already identified Wave 1 attacker**. **1,082.65 BTC (~$118M) still sits untouched** in the attacker's address.
The Takeaway
Hardware ≠ Unhackable. Security starts at seed generation, not just offline storage.
If you own a Coldcard (MK2 or later, firmware v4.1+): MOVE YOUR FUNDS NOW. Coinkite has released a patch.
*Not financial advice. DYOR.*
$ARB
$WLD
#ColdcardTheftInvestigationAdvances #Bitcoin #CryptoSecurity #HardwareWallet