Have there been any documented incidents of a “nonce covert channel attack”? How does ColdCard address this?
https://bitbox.swiss/blog/how-almost-all-hardware-wallets-can-steal-your-seed/
Are my Bitcoins safe?
It's hard to prove that this attack has been used in the past. Since the attack needs a few dozens signatures to work, wallets that have not been used to send many transactions should be safe.
👀 👇 #security #bitcoin #wallet
nostr:note1wd2d5j3asntdxzaya4tez68kgvvtc7lu7ehj90c4qq33rzshundsnvf9de
The link lists Blockstream as a safe device. I'm not sure if using multiple devices with multi-sig would help or not, but something to look into.
