Coldcard Firmware Vulnerability Exposes XRP Holders' Private Key Risk

A recent incident involving Coldcard wallets has left XRP holders questioning the security of their private keys. A firmware update in 2021 made private keys predictable, allowing attackers to drain thousands of wallets without physical access. The theft initially involved $89 million in Bitcoin from 4,585 addresses across three waves, but researchers later identified a fourth wave that pushed the total to approximately 1,816 BTC, worth around $114 million at the time.

Ripple Bull Winkle, a crypto researcher, has pointed out the risks associated with wallet firmware and key generation. He emphasized that Tangem offers a different approach to hardware wallet security by generating private keys directly on the physical card using certified hardware randomness.

The incident highlights the importance of not only keeping wallets offline but also ensuring the security of the process used to generate private keys. Winkle's warning centers on this specific security consideration, stressing that XRP holders should be aware of how their wallet creates, stores, and protects the private key controlling their assets.