Meta Particulars WhatsApp and Messenger Interoperability to Adjust to EU’s DMA Laws

WhatsApp and Messenger Interoperability

Meta has supplied particulars on the way it intends to implement interoperability in WhatsApp and Messenger with third-party messaging companies because the Digital Markets Act (DMA) went into impact within the European Union.

“This permits customers of third-party suppliers who select to allow interoperability (interop) to ship and obtain messages with opted-in customers of both Messenger or WhatsApp – each designated by the European Fee (EC) as being required to independently present interoperability to third-party messaging companies,” Meta’s Dick Brouwer said.

DMA, which formally became enforceable on March 7, 2024, requires corporations in gatekeeper positions – Apple, Alphabet, Meta, Amazon, Microsoft, and ByteDance – to clamp down on anti-competitive practices from tech gamers, stage the taking part in discipline, in addition to compel them to open a few of their companies to rivals.


As a part of its efforts to adjust to the landmark laws, the social media large mentioned it expects third-party suppliers to make use of the Signal Protocol, which is utilized in each WhatsApp and Messenger for end-to-end encryption (E2EE).

The third-parties are additionally required to package deal the encrypted communications into message stanzas in eXtensible Markup Language (XML). Ought to the message include media content material, an encrypted model is downloaded by Meta shoppers from the third-party messaging servers utilizing a Meta proxy service.

The corporate can also be proposing what’s known as a “plug-and-play” mannequin that enables third-party suppliers to hook up with its infrastructure for attaining interoperability.

“Taking the instance of WhatsApp, third-party shoppers will connect with WhatsApp servers utilizing our protocol (based mostly on the Extensible Messaging and Presence Protocol – XMPP),” Brouwer mentioned.

“The WhatsApp server will interface with a third-party server over HTTP with a purpose to facilitate a wide range of issues together with authenticating third-party customers and push notifications.”

Moreover, third-party shoppers are mandated to execute a WhatsApp Enlistment API when opting into its community, alongside offering cryptographic proof of their possession of the third-party user-visible identifier when connecting or a third-party person registers on WhatsApp or Messenger.


The technical structure additionally has provisions for a third-party supplier so as to add a proxy or an middleman between their shopper and the WhatsApp server to supply extra details about the sorts of content material their shopper can obtain from the WhatsApp server.

“The problem right here is that WhatsApp would not have direct connection to each shoppers and, in consequence, would lose connection stage alerts which can be essential for holding customers secure from spam and scams reminiscent of TCP fingerprints,” Brouwer famous.

“This method additionally exposes all of the chat metadata to the proxy server, which will increase the chance that this knowledge may very well be by chance or deliberately leaked.”

Notify of
Inline Feedbacks
View all comments
Previous Post
How to Ensure Open-Source Packages Are Not Mines

How one can Guarantee Open-Supply Packages Are Not Mines

Next Post
The Ongoing Struggle to Protect PLCs

The Ongoing Battle to Defend PLCs

Related Posts