WTF!
I learnt about this from Nostr

Devices running certain firmware released since 2021 get almost no real randomness at all. Newer models add a partial fix. It still narrows the possible outcomes to roughly four billion combinations, a number modern computers can work through. Historically, Block traced the flaw to that 2021 update, and a follow-up fix a year later still fell short.
https://beincrypto.com/coldcard-rng-flaw-bitcoin-theft/

#bitcoin #coldcard #coinkite #hardwarewallet #btcheist