Article

What I am covering here is 1) randomness risk. The device could be using a weak or malicious random source like hash(time)

2) keep your old device because hardware hacks are Lindy. The older the device the more chances of someone publishing the hack, if it’s in use still. (The older the version the more chances someone found the modem on it)

3) the device could phone home any previously loaded seed phrases. So if possible use a fresh air gapped mac when signing. Wipe it after signing so if the seed phrase is just passed from the hardware to the host software that memory is wiped.