Encrypted messaging between Android and iOS users is one step closer to reality, thanks to a major new technical update announced this week. The latest RCS Universal Profile version 3.0, introduces interoperable end-to-end encryption (E2EE) for messaging across different platforms.
Currently, users wishing to securely communicate across different operating systems often rely on third-party apps. With this update, enhanced security could become the standard for everyday messaging, even across large group chats, eliminating the need to rely exclusively on standalone messaging apps like WhatsApp.
Central to the RCS 3.0 upgrade is Messaging Layer Security (MLS), a new standard that ensures messages, files, and multimedia content remain confidential and secure while traveling between devices. The inclusion of MLS means users of different operating systems and messaging services can securely interact for the first time without relying on third-party applications.
RCS will be the first large-scale messaging service to support interoperable end-to-end encryption between client implementations from different providers. Along with other security measures, including SIM-based authentication, it will significantly enhance user privacy.
Both Apple and Google have committed to adopting MLS within their respective ecosystems. Google intends to integrate MLS into Android messaging apps, while Apple has confirmed that future software updates for iOS, iPadOS, macOS, and watchOS will support end-to-end encrypted RCS messaging. Though timelines remain unspecified, these moves represent a significant step towards universal secure messaging across platforms.
However, experts have warned the introduction of widespread cross-platform encryption won’t come without challenges. Increased interoperability could potentially exacerbate security threats such as phishing and spam, problems that apps like WhatsApp already face. Analysts suggest that increased connectivity across platforms will require additional security measures and robust anti-abuse tools.
The adoption of interoperable encryption standards also comes at a sensitive time, with governments around the world scrutinizing the use of encryption. Recent pressure, particularly from authorities in the UK, has revived concerns about whether tech companies could be forced to create backdoors for law enforcement surveillance purposes. Apple is currently involved in ongoing discussions over similar issues, highlighting the complex balance between privacy and regulation.
Stay tuned to DC Brief for further updates on this story and other technology developments.
