Sunbird has updated its AV1 Message system which is now AV2 and it is designed to keep messages safe. As Sunbird notes, “Unencrypted messages are never stored anywhere on disk or in a database. When messages are decrypted to be passed to the iMessage and RCS/Google Messages network, they exist in that state only within memory for a limited period of time. In the front-end app, messages are only stored in an encrypted state within the in-app database.”
The bottom line as far as Sunbird is concerned is that “Since November, the Sunbird team has worked to migrate the iMessage implementation off of AV1 to the AV2 architecture. With the adoption of AV2, we believe that we’ve not only resolved the security vulnerabilities previously identified but also provided a secure and privacy-oriented foundation for Sunbird’s iMessage integration moving forward.”