Re: ‘Fake’ cellphone towers found in U.S.

I suggested one of the Bitcoin ATM guys to use two boards. One board is connected like normally to networks and accessories and the like. That one board also has a custom connection to the other board. The other board contains all the secrets and performs all the important functions. The one board just communicates. The advantage is that once the big bad guys crack your baseband, your chipset, your system on a chip's trapcards, etc. your secrets are still safe. If you sign all the packets that pass through the communication board you can truly abstract away from almost every possible hack that both the boards could be vulnerable for. (Do you trust your silicon?)