As long as your network traffic is sanitary before it hits the baseband (Tor, VPN, or something you trust) you're good on that end. A better design would be to have three settings for the mic: baseband, app processor, killed, so you could run the audio path through free software as well (VoIP). The idea is to minimize what the baseband is doing in the system, and assume it's malicious. It's hard to duplicate PhD person years on the signal processing side, and, if you get that far, then navigate the IP minefield.
Re:End of Year Librem 5 Update
by walterbell on Wednesday January 09, 2019 @11:20PM
(#18871492)
Can some baseband processors access memory on the host processor?
They will be good guys until they decide they will not be good guys for arbitrary reasons or if they are forced to comply with a Government decree.
I'd much rather put my trust in a good-enough hardware platform that I _know_ I can control when required.