In depth review validating the credibility of Signal’s encryption by a Security Engineer who specializes in encryption.
Reviewing the Cryptography Used by Signal by Soatok
The bottom line was in total, no vulnerabilities were found.
Just be sure to not use the default keyboard on your phone, use one that never connects to the internet.
I’d recommend the FUTO keyboard.
Personally I’ve never used HeliBoard but from the surface level digging I’ve done it looks pretty similar and is chasing the same goal as FUTO: a good fully offline keyboard app.
I heard about FUTO and tried it’s “voice to text” function and was impressed so I’ve stuck with it. This function for it is also fully offline vs the default GBoard which sends that voice data to Google to store indefinitely.
