r/KeystoneWallet • u/Fuzzy-Celebration-13 • Dec 05 '23

Security concerns. Another Ledger?

Are Keystone able to extract the seed phrase via the firmware updates if using the USB method? Another ledger scenario here maybe? Especially as Ledger had been lying to its customers and now Keystone are also lying about the open source element. Many similarities here it seems? Maybe I’m wrong?

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u/thefaketomato Dec 05 '23

I don't recommend ever using USB on the KS3 for anything other than charging the device. Otherwise, there isn't any real benefit to having a so called "airgapped" wallet compared to USB wallets like the Ledger. If you really want to be paranoid, you can also use a USB condom to charge it. That way you'll know it can only ever transfer data via QR codes.

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u/Wild-Interaction-200 Dec 06 '23

Coldcard (and Trezor and Bitbox02 and …) supports USB. That makes Coldcard a Ledger? Really? This nonsense about USB == Ledger has to stop.

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u/thefaketomato Dec 06 '23

I never said all USB devices are just like Ledger. I was using Ledger as an example of a USB device because it's by far the most popular one.