Coldcard $100M Crypto Hack; Attacker Sends 30 BTC to New Address

TLDR

• Coinkite plans a technical post-mortem after the Coldcard firmware exploit caused more than $100 million in losses.
• Lookonchain reported that a wallet linked to the exploit moved 30 BTC worth about $1.94 million.
• Galaxy Research verified 1,596 BTC stolen from roughly 7,300 addresses across three attack waves.
• A random number generation flaw weakened wallet seeds created by affected Coldcard firmware.
• The vulnerability affected wallet seed generation and did not compromise Bitcoin’s underlying network or cryptography.

Coldcard maker Coinkite is preparing a technical post-mortem after a firmware flaw was linked to more than $100 million in Bitcoin losses. The company said the review will be released once it is safe to publish the technical details.

Coinkite told Bloomberg that its privacy-focused design prevents it from independently confirming reports that the attack drained about $130 million in Bitcoin. The company said its immediate priority remains supporting customers affected by the exploit while continuing to provide updates.

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