End-to-end encryptionTurning data into a form that cannot be understood without the right key. More means that message content is readable only on the endpoints of the communication. The service providerThe company you use to connect to the internet. It can see some network information about your traff... More should not be able to read it. The weak point remains the phone or computer where the message is finally displayed.
Why it matters: It explains why a secure messengerA messaging app designed with privacy in mind, usually with end-to-end encryption. More does not help if an attacker has access to your device.
