A new signature-based attack lets a compromised hardware wallet leak its private keys in just a handful of signed transactions. Closed-source firmware is the threat surface. Here's the actual threat...

Bitcoin addresses come in five flavors — Legacy, P2SH-wrapped SegWit, native SegWit (Bech32), and Taproot (Bech32m). Here's how to read them at a glance and which one your KeepKey should be using.

KeepKey uses a scrambled PIN grid to defeat shoulder-surfing, screen recording, and keylogger malware. Here's how it works and why it's the right design.