💣 $BTC COLD STORAGE BREACH: 594.5 BTC SWEPT VIA WEAK SEED ENTROPY!
Cold storage is supposed to be the final fortress — this breach shows the door was ajar. Coinkite's Coldcard Mk3 firmware since 4.0.1 generated seeds with roughly 72 bits of entropy instead of the expected 128, and attackers found the key. 🌊
Atlas21 tracked the automated sweep: 500 single-sig addresses, 1,324 UTXOs drained, 594.5 BTC (~$38M) evaporated across four consecutive blocks. No multisig or taproot wallets were touched — which tells you exactly where the weak link lived. 🔍
On affected hardware? Updating alone won't save you. Generate a fresh seed, verify addresses on-device, and move everything before the sweepers come back. BTC held ~$64K, but the real damage is to trust in cold storage itself. 💡 Does this rewrite your self-custody playbook, or do you still back hardware wallets? 💬
⚠️ Not financial advice. Always manage your risk. 🛡️
🏷️ #BTC #ColdStorage #SecurityAlert #Bitcoin #Crypto
🛡️ 💎
Cold storage is supposed to be the final fortress — this breach shows the door was ajar. Coinkite's Coldcard Mk3 firmware since 4.0.1 generated seeds with roughly 72 bits of entropy instead of the expected 128, and attackers found the key. 🌊
Atlas21 tracked the automated sweep: 500 single-sig addresses, 1,324 UTXOs drained, 594.5 BTC (~$38M) evaporated across four consecutive blocks. No multisig or taproot wallets were touched — which tells you exactly where the weak link lived. 🔍
On affected hardware? Updating alone won't save you. Generate a fresh seed, verify addresses on-device, and move everything before the sweepers come back. BTC held ~$64K, but the real damage is to trust in cold storage itself. 💡 Does this rewrite your self-custody playbook, or do you still back hardware wallets? 💬
⚠️ Not financial advice. Always manage your risk. 🛡️
🏷️ #BTC #ColdStorage #SecurityAlert #Bitcoin #Crypto
🛡️ 💎