A mysterious hacker has stolen more than $70 million worth of Bitcoin from Coldcard hardware wallets: bitcoinmagazine.com/news/coldcar... The attackers exploited a vulnerability in the wallet's firmware that produced weak and easy to guess private keys: blog.coinkite.com/entropy-tech...
Technical Deep Dive into the Entropy IssueTechnical Deep Dive into the Entropy Issueblog.coinkite.com