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b'They call it RFC 9420, we say MLS: A new IETF standard for end-to-end encryption was published in July and brings large improvements in performance and security compared to existing protocols. We are here to present Messaging Layer Security, its ecosystem and its roadmap.\\n\\nThe MLS protocol is already being used in production to end-to-end encrypt Webex conference calls and will soon provide encryption for Android messages and RCS 2.0 for billions of users. Other messaging tools (such as Discord, Matrix, Wire, etc.) are currently trialing MLS and are expected to follow.\\n\\nWhy was the protocol developed in the first place? How does it work? What are the next steps for MLS?\\n\\nMLS improves upon existing protocols such as Signal in group messaging applications. We co-authored the protocol specification and will briefly talk about what motivated the creation of MLS, how it relates to other existing messaging protocols as well as its design process in general.\\n\\nAs a group messaging protocol, the security guarantees provided by MLS go beyond authentication and confidentiality. We will go into detail on what security properties users can expect and take a look under the hood on how MLS works.\\n\\nWhile the MLS specification has only been published recently, more work is underway and an ecosystem is already forming around the standard. We\\u2019ll touch on topics like MLS implementations, metadata hiding, federation, and interoperability between messengers (also in the context of the new IETF MIMI working group [1]). And of course we\\u2019ll share insights into the future of Messaging Layer Security!\\n\\n[1] https://datatracker.ietf.org/group/mimi/about/\\n\\nabout this event: https://events.ccc.de/congress/2023/hub/event/rfc_9420_or_how_to_scale_end-to-end_encryption_with_messaging_layer_security/'