Coldcard | Crypto

Bitcoin users moved 39,600 BTC in small transactions as the Coldcard hack continued, with researchers warning that the attack remained active. Smaller Bitcoin transfers have reached levels not seen since the collapse of cryptocurrency exchange FTX amid an ongoing suspected Coldcard hack. Bitcoin transfers below 1 BTC climbed to their highest daily level since November 2022 on Friday, with 39,600 BTC moved, according to data shared by CryptoQuant head of research Julio Moreno on Saturday. The figure was just 300 BTC below the 39,900 BTC transferred on Nov. 16, 2022, days after FTX filed for bankruptcy. “The Bitcoin plebs had not moved this amount of BTC in a day since the FTX collapse,” Moreno said, adding that he was encouraged to see users “taking action.” Read more

Binance founder Changpeng Zhao says hardware wallets can still have bugs and suggests spreading funds across multiple wallets after the major Coldcard security failure.

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.

Coinkite urged Coldcard Mk3 users to migrate funds after identifying a potential seed-generation risk, as Bitcoin security experts separately examine an unexplained $38 million wallet drain. Canadian Bitcoin hardware maker Coinkite has warned users of its Coldcard Mk3 signing device to move funds from wallets whose seed phrases were generated on affected firmware.  On Thursday, Coinkite said seeds created on an Mk3 running firmware version 4.0.1, released in March 2021, or any later Mk3 version may put funds at risk. The issue extends through version 5.0.3, the final firmware supporting the Mk3, while the Mk4, Q and Mk5 are not affected, according to the company’s early analysis. The warning comes as Bitcoin security specialists examine an unexplained, coordinated sweep involving 594.48 BTC from single-signature addresses. However, no definitive public evidence has established that the Mk3 issue caused those transfers. Read more