Livestream on X: February 11, 5pm UTC, 9am PT. SimpleX network: Power to the People! Evgeny and Dan Keller (co-founder of Flux) will talk about: - extreme decentralisation, - Flux servers in the apps, - future commercial model, - large content channels, - moderation & freedom of speech. Join us at

X (formerly Twitter)

SimpleX Chat (@SimpleXChat) on X

The only messaging network without any user identifiers. Get the app: https://t.co/h416sFMxuz Own a part of SimpleX Network: https://t.co/BH23vbGDvN

SimpleX Chat v6.2 is out! The app now includes both servers that we operate and servers independently operated by Flux – thanks to Daniel Keller and Flux team! More privacy and decentralization for all users! Also in v6.2: - business chats! - better UX: open chat on first unread (not on iOS yet), show who reacted. - bette iOS notifications! Read more:

SimpleX network: preset servers operated by Flux, business chats and more with v6.2 of the apps

Servers operated by Flux added to SimpleX Chat apps (v6.2-beta.1) to improve metadata privacy – a game changer for SimpleX network users!

Servers operated by Flux - true privacy and decentralization for all users

Huge thanks to Daniel Keller (Flux CEO and co-founder) for supporting our vision for extreme decentralization of communications!

Our criticism of recently published Wired article: "Wired's Attack on Privacy"

Wired’s Attack on Privacy

New security review by Trail of Bits and new v6.1 released – better calls, better iOS notifications and better user experience!

SimpleX network: cryptographic design review by Trail of Bits, v6.1 released with better calls and user experience.

Secure Messaging Apps Comparison | Privacy Matters

This site compares secure messaging apps from a security & privacy point of view. These include Facebook Messenger, iMessage, Skype, Signal, Simple...

by is the great comparison of messaging apps, but there are several incorrect statements about @SimpleXChat there. Commenting in thread 🧵 below.

Please fill this survey about SimpleX Chat:

SimpleX Chat user survey 2

Turn data collection into an experience with Typeform. Create beautiful online forms, surveys, quizzes, and so much more. Try it for FREE.

It is a smaller version of the survey we did last year, please answer again if you answered then. Thank you!

Announcing $1.3m pre-seed investment from @jack and Asymmetric VC in SimpleX Chat 🚀

SimpleX network: the investment from Jack Dorsey and Asymmetric, v6.0 released with the new user experience and private message routing.

Also SimpleX Chat v6.0 stable is now released with the new user experience and private message routing – details in the post.

In case you missed the news, #ChatControl is back on the agenda of the EU governments:

Patrick Breyer

Take action to stop chat control now!

Chat control is back on the agenda of EU governments. EU governments are to express their position on the latest proposal on 23 September. EU Minis...

We wrote before that strong e2e encryption is the only way to protect children online:

Protecting Children's Safety Requires End-to-End Encryption

Write to the MPs you voted for – every single letter can change the outcome. And huge thanks to Patrick Breyer for fighting this insanity.

Please note: we do NOT control the domain simplexchat.org It might be a phishing site to collect the data (it has an exact copy of our website https://simplex.chat). We submitted the complaint to the domain registrar (GNAME). Do NOT download anything from simplexchat.org, obviously.

SimpleX Chat v6.0-beta.4 is released! It is stable to use, and please let us know any issues - any help testing it is really great! You can get beta version for iOS from Apple TestFlight, and for Android from GitHub or from our F-Droid repo (it's still in review in Play Store beta channel):

Download SimpleX apps

The final release will be published on 8/14, together with the announcements.

Communication privacy and hard product choices:

SimpleX: Redefining Privacy by Making Hard Choices

We are upgrading the preset SimpleX relays to the new version - it is compatible only with the apps starting from v5.5.3 (released early February) - please upgrade to the latest version and ask your friends to upgrade too.

SimpleX Chat v5.7 released: - quantum resistant e2e encryption with contacts enabled by default. - forward messages without revealing the source and save them to private notes. - in-call sounds and switching sound sources. - customizable profile images - from square to circle. - better network connection management. Also, we added Lithuanian interface language to Android and desktop apps - thanks to our users! Read more:

SimpleX network: legally binding transparency, v5.7 released with better calls and messages

The post about SimpleX Chat v5.6 release with quantum resistant end-to-end encryption and also about how SimpleX network protocols will be moving to nonprofit governance: https:// simplex.chat/blog/20240323-sim plex-network-privacy-non-profit-v5-6-quantum-resistant-e2e-encryption-simple-migration.html Esra'a Al Shafei has just joined SimpleX Chat team to help us deliver these goals - welcome!

Updated "SimpleX Chat Privacy Policy and Conditions of Use" The updated document:

GitHub

simplex-chat/PRIVACY.md at stable · simplex-chat/simplex-chat

SimpleX - the first messaging network operating without user identifiers of any kind - 100% private by design! iOS, Android and desktop apps 📱! ...

The changes:

GitHub

docs: update privacy policy by epoberezkin · Pull Request #3796 · simplex-chat/simplex-chat

SimpleX - the first messaging network operating without user identifiers of any kind - 100% private by design! iOS, Android and desktop apps 📱! ...

TL;DR: - it clarifies that we develop software for communication network, and not a communication service. - it highlights the requirement of AGPLv3 license to publish any code modifications, and our commitment to run unmodified code. Let us know any comments / questions!

Improving repudiation (deniability) in SimpleX protocols Please send any questions/comments! We believe that repudiation (aka deniability) is very important for communications. See this discussion with Session CTO about it, for example:

X (formerly Twitter)

Kee Jefferys (@JefferysKee) on X

@SimpleXChat @startpage PCS and Deniability are not very practically beneficial properties, PFS is a little more useful, PCS/PFS rely on key compro...

X (formerly Twitter)

SimpleX Chat (@SimpleXChat) on X

That "PCS and Deniability are not very practically beneficial properties" is a view that most security researchers and technically competent users ...

X (formerly Twitter)

Kee Jefferys (@JefferysKee) on X

Thanks for your response, Before responding to the specifics of your tweets, I want to start by acknowledging that we are both fundamentally addres...

X (formerly Twitter)

SimpleX Chat (@SimpleXChat) on X

Hi @JefferysKee - thanks for replying! > it's counterproductive for secure messengers to engage in internal conflicts We cannot have "internal co...

Currently only a part of SimpleX protocol stack provides it – client-to-client e2e encryption, that includes double ratchet (aka Signal) algorithm in one of the layers. Client-relay protocol, on another hand, does not provide it, and as relays are chosen by the recipients, a modified relay can provide non-repudiation for sent messages, which is undesirable in the context of private communications. We believe there should be a possibility for digital off-the-record conversations, in the same way as it is possible for in-person meetings - while recipient can keep the memory and even transcript, it should not be a strong proof to a third party. This proposal adds repudiation to client-relay protocol by replacing cryptographic signature with authenticator (see this WIP document for the details: https://github.com/simplex-chat/simplexmq/blob/ep/cmd-auth/rfcs/2024-02-03-deniability.md). It is already mostly implemented and will be fully rolled out by v5.7. A more detailed post about repudiation importance and its acceptance in society and legal systems is coming.

The comments on comparisons of SimpleX with other platforms: https://www.reddit.com/r/SimpleXChat/comments/1afgrcj/comments_on_comparisons_of_simplex_with_other/

SimpleX Chat v5.5 is released – with private notes and group history!

SimpleX Chat: free infrastructure from Linode, v5.5 released with private notes, group history and a simpler UX to connect.

Also in this release: - simpler UX to connect - paste SimpleX links to search bar. - improved message delivery and reduced battery usage. - fully encrypted files and media in the app storage. - reveal secrets in messages by tapping. - many other improvements. Downloads page:

Download SimpleX apps

#privacy #security #messenger