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Coinkite

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ColdcardBitcoinJuan GaltFTXGalaxy Research
Coinkite’s Coldcard Bug Exposed Single-Sig Risk. Multi-Vendor Multisig Is the New Bitcoin Custody Baseline

Coinkite’s Coldcard Bug Exposed Single-Sig Risk. Multi-Vendor Multisig Is the New Bitcoin Custody Baseline

Bitcoin Magazine Coinkite’s Coldcard Bug Exposed Single-Sig Risk. Multi-Vendor Multisig Is the New Bitcoin Custody Baseline Coinkite now forces dice rolls and key-press entropy on new Coldcard seeds. The lasting lesson from the July–August 2026 thefts is not to abandon self-custody — it is to stop generating every key on one vendor. This post Coinkite’s Coldcard Bug Exposed Single-Sig Risk. Multi-Vendor Multisig Is the New Bitcoin Custody Baseline first appeared on Bitcoin Magazine and is written by Juan Galt .

BitcoinCoinkiteColdcard
Aug 26, 2026 · byBitcoin Magazine
Coldcard crisis hits $130 million – proving ‘not your keys’ is meaningless if you trust a single device to generate them

Coldcard crisis hits $130 million – proving ‘not your keys’ is meaningless if you trust a single device to generate them

Block's Bitcoin Engineering and Security team and independent Bitcoin Core developers have traced the recent batch of Coinkite Coldcard wallet losses to a specific firmware defect that exposed a hidden weakness in Bitcoin self-custody before any user touched a seed phrase. The bug diverted the device's random-number generation from its STM32 hardware source to MicroPython's […] The post Coldcard crisis hits $130 million – proving ‘not your keys’ is meaningless if you trust a single device to generate them appeared first on CryptoSlate .

BitcoinCoinkiteColdcard
Aug 4, 2026 · byCryptoSlate
Coldcard Hacker Gets Brazen Bitcoin Laundering Offer Onchain

Coldcard Hacker Gets Brazen Bitcoin Laundering Offer Onchain

The Coldcard security incident entered another chapter after a public bitcoin transaction offered laundering services to the thief behind one of the largest self-custody bitcoin thefts ever recorded, while users also reported emergency firmware updates leaving some hardware wallets unusable. The new developments come just days after Coinkite disclosed that a long-dormant firmware flaw had […]

BitcoinCoinkiteColdcard
Aug 2, 2026 · byBitcoin.com News
Coldcard’s $89M wallet bug triggers the biggest Bitcoin movement since FTX and completely distorts market signals

Coldcard’s $89M wallet bug triggers the biggest Bitcoin movement since FTX and completely distorts market signals

Coldcard’s wallet crisis has shaken Bitcoin sentiment, blurred on-chain signals and exposed a recurring weakness in AI-assisted cyber defenses. On July 30, hardware maker Coinkite warned users that wallets generated with affected Coldcard firmware could be drained because a software error produced seed phrases with far less randomness than intended. This security incident, Galaxy Research […] The post Coldcard’s $89M wallet bug triggers the biggest Bitcoin movement since FTX and completely distorts market signals appeared first on CryptoSlate .

BitcoinCoinkiteColdcard
Aug 2, 2026 · byCryptoSlate
Coinkite Under Fire for Retaining Customer Emails After $88M Coldcard Hack

Coinkite Under Fire for Retaining Customer Emails After $88M Coldcard Hack

The company, which is facing issues with its Coldcard wallet, sent security notices to customers to warn them about the high risk of losing their bitcoin. Nonetheless, Rodolfo Novak, co-founder and CEO of Coinkite, had assured that the company retained customer data for just 90 days after a purchase. Coinkite Faces Criticism For Leveraging Customer […]

BitcoinCoinkiteColdcard
Aug 2, 2026 · byBitcoin.com News
Coinkite Releases Fixed Firmware After Coldcard Bug; AI Likely Involved In The Breach

Coinkite Releases Fixed Firmware After Coldcard Bug; AI Likely Involved In The Breach

Bitcoin Magazine Coinkite Releases Fixed Firmware After Coldcard Bug; AI Likely Involved In The Breach NVK stated that AI-assisted code review can now find latent bugs at a speed outpacing even the industry’s most seasoned experts, calling it a sober reality of the new AI paradigm. This post Coinkite Releases Fixed Firmware After Coldcard Bug; AI Likely Involved In The Breach first appeared on Bitcoin Magazine and is written by Juan Galt .

BitcoinCoinkiteColdcard
Jul 31, 2026 · byBitcoin Magazine
A flaw in Coldcard seed generation lets attackers recreate private keys from the press of a button

A flaw in Coldcard seed generation lets attackers recreate private keys from the press of a button

Some Coldcard Mk3 owners may need to move their Bitcoin. Coinkite says funds tied to seeds generated on firmware 4.0.1 or a later Mk3 release may be at risk. Bitcoin Core contributor instagibbs said he recreated the vulnerable seed on a newly initialized Mk3. Coinkite says Mk4 and Mk5 devices are also affected before firmware […] The post A flaw in Coldcard seed generation lets attackers recreate private keys from the press of a button appeared first on CryptoSlate .

BitcoinCoinkiteColdcard
Jul 31, 2026 · byCryptoSlate
Coinkite Warns Coldcard Mk3 Owners After Reports of $38M Bitcoin Loss

Coinkite Warns Coldcard Mk3 Owners After Reports of $38M Bitcoin Loss

Coinkite issued a security advisory Thursday warning owners of its Coldcard Mk3 hardware wallet that funds tied to certain firmware versions may be at risk. Hardware wallet incidents rarely unfold as isolated events. When long-dormant addresses begin moving in a tightly coordinated pattern, the timing alone warrants scrutiny. That was the case on July 30, […]

BitcoinCoinkiteColdcard
Jul 31, 2026 · byBitcoin.com News