☕️ Coldcard Firmware Vulnerability Leads to $116M Theft A firmware defect in Coldcard hardware wallets allowed attackers to drain roughly 1,816 $BTC starting in July 2026 [4].
1. Coldcard Firmware Vulnerability Leads to $116M Bitcoin Self-Custody Theft — A defect introduced in March 2021 reduced seed entropy, allowing remote attackers to drain funds across four waves [4]. Over 5,200 addresses were compromised, and firmware updates do not secure existing seeds [4]. 2. Circle Discloses USDC Economics, Paying $819M to Distribution Partners — The issuer generated $1.4 billion in revenue during the first half of 2026, retaining a 7% net profit margin after transaction costs and partner payouts [1]. $USDC reached over $36 trillion in onchain volume [1]. 3. Strive Files to Offer 5 Million Shares of 15% SATS Preferred Stock — The asset manager plans to issue perpetual preferred stock yielding 15% annually [3]. Strive will use the capital to buy $BTC, fund operations, and repurchase equity [3]. 4. Ethereum Schedules Glamsterdam Upgrade on Hoodi Testnet for Oct. 26 — The network will activate the upgrade on Oct. 26, raising the testnet gas limit to 200 million and implementing proposer-builder separation [9].
📊 Bitcoin traded at $81,594 and Ether at $2,411 over the last 24 hours, while total market capitalization fell slightly to $2.70 trillion.
