Coinkite: COLDCARD Flaw Exposes Mk2 Mk3 Seeds

Coinkite disclosed a critical entropy-generation flaw in COLDCARD firmware that reduced seed security on Mk2 and Mk3 devices, with reports tying the issue to roughly $38M in stolen BTC. Affected users must update to patched firmware, create fresh seeds, and migrate funds at once. Coinkite leads Bitcoin hardware security with products including COLDCARD, and prior audits of Bitcoin hardware wallet seed generation vulnerabilities plus Coinkite COLDCARD entropy flaw history and prior audits had not caught the defect.

Price sits at $63858.7 inside the Bollinger band with upper resistance at $65010.03 and lower support at $63250.43. The structure remains bearish as price trades below both EMA50 at $64424.75 and EMA200 at $63949.98, while RSI(14) at 43.82 stays neutral and MACD shows a bullish golden cross at -44.3. With price testing upper Bollinger resistance while the 50-EMA acts as overhead resistance, a healthy retracement toward the 50-EMA support at $64424.75 appears probable before any continuation.