Coldcard

$15B in Bitcoin moved after $130M Coldcard hack

A firmware vulnerability in Coldcard hardware wallets that has drained an estimated $130 million in Bitcoin since July 30 triggered a far larger response across the self-custody ecosystem, with approximately 233,000 BTC — worth roughly $15 billion — migrating from…

Coldcard hack losses still climbing as analysts diverge on total Bitcoin stolen

Nearly two weeks after attackers began draining Bitcoin from compromised Coldcard hardware wallets, blockchain investigators are still working to establish the full scale of what analysts are calling the worst self-custody failure in Bitcoin's history. Estimates of total losses range…

Coldcard wallet hack drives surge in new Bitcoin addresses

A firmware vulnerability in Coldcard hardware wallets made by Toronto-based Coinkite has led to the theft of an estimated $130 million in Bitcoin from approximately 7,300 wallet addresses, marking one of the most damaging exploits ever to target self-custody infrastructure.

Bitcoin ETFs post best week since April after Coldcard hack drained $130M

Hackers have exploited a five-year-old firmware flaw in Coldcard hardware wallets to drain more than $130 million worth of Bitcoin from thousands of supposedly secure offline accounts, in what has become the third-largest crypto theft of 2026. The breach, which…

BTCPay Server exploit drains Lightning wallets amid Coldcard fallout

Bitcoin infrastructure is reeling from twin security crises this week after the Coldcard hardware wallet exploit surpassed $111 million in confirmed stolen funds and a separate critical vulnerability in BTCPay Server allowed attackers to drain merchant Lightning nodes.

Coldcard maker declines to confirm losses from $130M hack

Hackers have drained an estimated 1,596 to 1,816 bitcoin — worth between $100 million and $130 million — from more than 7,300 addresses tied to Coldcard hardware wallets in the largest hardware wallet exploit in crypto history. The attack, which…

CZ urges wallet diversification after $70M Coldcard exploit

Binance founder Changpeng Zhao urged crypto holders to spread their funds across multiple wallets after a firmware flaw in Coldcard hardware wallets allowed an attacker to drain approximately $70 million in Bitcoin over the span of roughly 40 minutes.

Coldcard wallet flaw drains $38M in bitcoin in 25 minutes

A flaw in the key generation process of Coldcard Mk3 hardware wallets allowed an attacker to drain roughly 594 bitcoin — worth about $38 million — from around 500 wallets in under 30 minutes early Friday, in one of the…