Does that mean that other apps like signal for example have back doors?
Do criminals have a knowledge of exploits in the recommended messaging apps?
That's correct, you still need a phone number for sign up. between contacts you can use usernames.
So Signal has your phone number, your contacts only have it if you use your number instead ofgiving them a username.
Icon base by Lorc under CC BY 3.0 with modifications to add a gradient
That's correct, you still need a phone number for sign up. between contacts you can use usernames.
So Signal has your phone number, your contacts only have it if you use your number instead ofgiving them a username.