How It Works
Apple’s iOS 26.5 update introduces end-to-end encrypted RCS messaging, allowing secure communication between iPhone and Android users for the first time. This feature relies on the GSMA’s RCS Universal Profile, which now incorporates the Messaging Layer Security (MLS) protocol to provide encryption comparable to iMessage. Users must update their devices and ensure their carrier supports the new standard, with the encryption automatically applied when both parties use compatible messaging apps.
Impact and Scope
This development marks a significant step for cross-platform messaging security, addressing a long standing privacy gap between Apple and Android ecosystems. However, the rollout depends on carrier adoption and device compatibility, meaning not all users will have immediate access. The update does not affect existing SMS or MMS messages, which remain unencrypted, and no specific CVEs are associated with this change.
Source: Cyber Security News
