ETHSecurity Community

I have a bunch of this new NFC cards BurnerOS by ArcX… it’s neat, but I wonder:
How trivial is to exfiltrate the private key? There has to be a threshold of assets secured at which it makes upgrades to a stronger solution.

gm. Fulltime degen, building fun stuff onchain. 
Master of Disaster Frogworks, /ottodao bullfrog, ex @astaria

Don’t think the private key can be extracted but since there’s no pin or password on the chip level you can just sign whatever you want if you have access to the card

As its maker, I would move to using it in a multisig above $10k in assets. More paranoid, or those who carry it everyday, might want to do less.