When you send a message using end-to-end encryption, it gets scrambled using a unique cryptographic key. This encrypted message is then transmitted to the recipient.

What is end-to-end encryption? End-to-end encryption means that any sent message travels in a scrambled form and can only be deciphered by the end user.

It’s not clear who is using this implementation of the end-to-end encryption algorithm, nor if anyone using devices with the end-to-end encryption is aware of the security vulnerability in them.

GSMA has released an updated set of specifications for RCS messaging, which includes end-to-end encryption (E2EE) between Android and iOS.