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The information provided on EL7.AI is for educational and informational purposes only and does not constitute financial advice.
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Sign InAmid growing reliance on self-custody solutions, a critical security flaw in Coldcard hardware wallets has resulted in the theft of approximately $100 million in Bitcoin. According to reports, attackers exploited a vulnerability in the pseudo-random number generator (PRNG) which utilized only 40-bit entropy, making private keys susceptible to brute-force attacks. This flaw allowed 15 unidentified attackers to compromise 126 addresses and seize funds due to insufficient randomness during the seed generation process.
This incident highlights significant technical risks within the hardware wallet sector, as the standard for private key entropy is 128 bits. Per market data and analysis from Galaxy Research, the confirmed losses have reached $100 million, though researchers suggest the total could rise as more victim reports are processed. The breach stems from a firmware bug that drastically lowered the security threshold, challenging the perceived safety of cold storage devices among retail and institutional investors.
As of the snapshot on August 4, 2026, specific instrument price levels are unavailable in the current data set. Investors should closely monitor security patches from Coldcard and broader sentiment regarding Bitcoin storage safety. On the macroeconomic front, the market continues to digest the Federal Reserve's interest rate decision from July 29, 2026, which maintained rates at 3.75%, as a primary driver for broader asset volatility.