EFF: "End-to-End Encrypted RCS Comes to Apple and Android Chats"
Now, those conversations can also benefit from the increased privacy and security that end-to-end encryption offers, making it so neither Google, Apple, nor the cellular carriers have access to the contents of messages. This feature comes courtesy of both Apple and Google supporting the GSMA RCS Universal Profile 3.0, which implements the Messaging Layer Security protocol for encryption. Metadata will likely still be collected and stored for these conversations, making alternatives like Signal still a better option for many conversations. Likewise, if you back up those conversations to the cloud, they may be stored unencrypted unless you enable Advanced Data Protection on iOS (Google Messages end-to-end encrypts the text of messages in backups, but not the media, so we’d like to see a similar offering as ADP on Android). Still, this is a significant step forward for the privacy of millions of conversations worldwide.
