Meta adds a new label to show whether third-party WhatsApp chats are secure
New rules in Europe means that WhatsApp will have to offer interoperability with other messaging apps and platforms. This is something that Meta has already been talking about, having published its preference for third parties to use the Signal Protocol as the foundation for these E2EE communications.
Use of the Signal Protocol will not be a requirement for interoperability, but whatever protocol is used by a third-party messaging app or platform, it will need to show they offer "the same security guarantees as Signal". To communicate security to users, WhatsApp is introducing a new "end-to-end encrypted" label that will be added to secure chats.
