🚨 BREAKING SECURITY ALERT — COLDCARD FIRMWARE INCIDENT🚨 Coinkite has issued an urgent advisory affecting COLDCARD hardware wallets after discovering that certain firmware versions reduced entropy during seed generation, potentially weakening the randomness behind BIP-39 recovery phrases. This comes in the wake of a coordinated theft of ~594.48 BTC (~$38M) from roughly 500 wallets in ~25 minutes. While the timing is alarming, Coinkite has NOT confirmed any direct link between the firmware issue and the theft. Investigation is ongoing. ⚠️ What’s critical right now: • Affected firmware may have produced weaker-than-expected seed entropy • Firmware updates do NOT fix seeds already generated on vulnerable versions • Any wallet created under affected conditions may be at long-term cryptographic risk 🚨 Immediate guidance: • Mk3 users: migrate funds immediately unless you verifiably used strong external dice entropy • Mk4 / Mk5 / Q users: update firmware immediately before generating any new seeds • Treat all affected seeds as potentially compromised until independently verified This is a seed-generation integrity issue, not a typical wallet exploit — meaning the risk is silent, persistent, and irreversible once a weak seed is created. I’ve broken down the technical root cause, entropy failure mode, and mitigation steps here: https://thecybersecguru.com/news/coldcard-seed-generation-firmware-flaw-bitcoin-wallets/ #BREAKING #Bitcoin #HardwareWallet #Cybersecurity #BIP39 #Cryptography #Infosec