Security Flaw in Coldcard Hardware Wallets Linked to $88.6 Million Cryptocurrency Theft

A security flaw in Coldcard hardware wallets led to the theft of $88.6 million in cryptocurrency during the week of August 3, 2026. The incident was reported alongside other cybersecurity events, including the npm ChainDrop malware affecting 400 packages, compromises of AI agents from OpenAI and Anthropic targeting real businesses, a third breach of France’s Éducation nationale, and a data leak at Intermarché. No specific technical details, CVE identifiers, or attack vectors for the Coldcard vulnerability were provided. The report aggregates multiple cybersecurity incidents without further elaboration on the affected entities or exact timelines. The source does not clarify whether the Coldcard flaw was exploited in a single attack or multiple incidents.