Top all-time · #1043
SimpleX Chat Blog
Company blog · simplex.chat/blogsecuritysystems
SimpleX Chat Blog is the company blog at simplex.chat, writing about security and systems. Since 2020, 66 different Hacker News readers have linked it 115 times, most often “SimpleX – private, decentralized chat with no global identities”. It is still writing: the last post was on 2026-09-19, and you can follow it by feed.
Rarely recommended · 4 of 40 sampled comments recommend it?
Why HN links it
HN comments mostly point to simplex.chat as an alternative to Signal, Telegram or Matrix, citing its no-user-ID design, metadata claims and self-hosted servers. Many comments are bare links.
Summarised by Claude from a sample of 40 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
SimpleX Chat - a private and encrypted messenger without any user IDs (not even random ones)! Make a private connection via link / QR code to send messages and make calls.
Most-linked posts?
- SimpleX – private, decentralized chat with no global identities38 people · 40 mentions · first linked 2020-10-22
- SimpleX Chat: The first messenger without user IDs8 people · 9 mentions · first linked 2022-11-12
- /docs/server.html3 people · 3 mentions · first linked 2024-08-27
- /2 people · 3 mentions · first linked 2023-12-05
- SimpleX Chat v5.2 released: message delivery receipts2 people · 3 mentions · first linked 2023-07-23
- SimpleX private message routing, v5.8 with IP address protection and chat themes2 people · 2 mentions · first linked 2024-06-05
- /faq/2 people · 2 mentions · first linked 2025-11-03
- SimpleX Chat adding quantum resistance to Signal double ratchet algorithm2 people · 2 mentions · first linked 2024-03-14
- SimpleX: New experience of connecting with people in SimpleX Chat v6.4-beta.42 people · 2 mentions · first linked 2025-07-04
- SimpleX.chat Security Assessment Results2 people · 2 mentions · first linked 2022-11-12
What Hacker News says?
So that law enforcement can ask Cloudflare for the IP logs... Signal is a joke. https://simplex.chat/
Comment linking /
on “0-click deanonymization attack targeting Signal, Discord, other platforms”Submitted Protecting Children's Safety Requires End-to-End Encryption as a story · 116 points
HN discussionhttps://simplex.chat/
Comment linking /
on “Welcome to Ladybird, a truly independent web browser”Submitted Wired's Attack on Privacy as a story · 115 points
HN discussionI found SimpleX recently ( https://simplex.chat/ ), which got my attention because it uses a unique account schema that doesn't have any individual account identifiers. It's got some interesting features. Not sure about user-friendliness since I don't use other messaging apps to know what to expect. It's mostly just interesting to me that they did away with the username entirely and they instead have users connect e…
Comment linking /
on “Multiple Russia-aligned threat actors actively targeting Signal Messenger”Submitted SimpleX Chat v6.0 Released as a story · 7 points
HN discussionI find that Privacyguides always has recommendations worth following: https://www.privacyguides.org/en/real-time-communication/ Of these, https://simplex.chat/ seems the most promising, thanks to a level of decentralization.
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on “Signal: Will leave the EU market rather than undermine our privacy guarantees”Submitted SimpleX – private, decentralized chat with no global identities as a story · 7 points
HN discussionBusiness, eh. Maybe it's time to go open source and fully distributed peer-to-peer. Something like Tox[0] or SimpleX[1]. The (actual) solution should be to fix legislation to adequate protect privacy, because they'll attack this next. But meantime, a technical solution is better than nothing. 0. https://tox.chat/ 1. https://simplex.chat/
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on “EU Council Approves New "Chat Control" Mandate Pushing Mass Surveillance”Submitted You were born without an account as a story · 4 points
HN discussionCan anyone comment on where this puts Signal now in relation to iMessage with PQ3[1]? As an aside, can anyone comment on earlier (fast/rushed/sound?) attempts at quantum-resistant encrypted messaging in Cyph[2] and Simplex[3] in comparison? [1] https://security.apple.com/blog/imessage-pq3/ [2] https://www.cyph.com/castle [3] https://simplex.chat/blog/20240314-simplex-chat-v5-6-quantum...
Comment linking /blog/20240314-simplex-chat-v5-6-quantum-resistance-signal-double-ratchet-algorithm.html
on “Signal Protocol and Post-Quantum Ratchets”Submitted SimpleX: New experience of connecting with people in SimpleX Chat v6.4-beta.4 as a story · 4 points
HN discussionThat you don't like the design is well known. But this is not the reason to lie. You understand the design quite well, from our past conversations, you simply don't like the fact that we don't recognise user IP address as a permanent user identifier on the protocol level. It is indeed a transport identifier, not a protocol-level identifier that all other messaging networks have for the users (in addition to transpor…
Comment linking /blog/20240314-simplex-chat-v5-6-quantum-resistance-signal-double-ratchet-algorithm.html
on “Is Telegram really an encrypted messaging app?”Submitted SimpleX Chat v6.3: new user experience and safety in public groups as a story · 4 points
HN discussion>One of the biggest privacy problems in messaging is the availability of loads of meta-data — essentially data about who uses the service, who they talk to, and when they do that talking. >I am not specifically calling out Telegram for this, since the same problem exists with virtually every other social media network and private messenger. In fact, https://simplex.chat/ is the only messenger with the least amount o…
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on “Is Telegram really an encrypted messaging app?”Submitted SimpleX network: large groups and privacy-preserving content moderation as a story · 4 points
HN discussion> I wonder why can't we have a fully open source e2ee that would be easy to use? what would you say about simplex's UX? https://simplex.chat/docs/guide/readme.html
Comment linking /docs/guide/readme.html
on “Buy European Made. Support European Values”Submitted Wired's Attack on Privacy as a story · 4 points
HN discussionhttps://simplex.chat/ is iterating on this. There’s a lot of pros and cons to any design of private group chats from the perspective of privacy, performance and single points of failure.
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on “Signal Introduces Stories”Submitted SimpleX Chat v5.5: private notes, group history and a simpler UX to connect as a story · 4 points
HN discussion> SimpleX does not. https://simplex.chat/faq/ > Private message routing is, effectively, a two-hop onion packet routing. And actually, it's even better than that: > Private message routing routes packets (each message is one 16kb packet), not sockets. Unlike Tor and VPN, it does not create circuits between your client and destination servers. The forwarding server creates one shared session between itself and the de…
Comment linking /faq/
on “Registration without a phone number on Signal will use zero-knowledge proofs”Submitted The first messenger without user IDs as a story · 4 points
HN discussion> And, I don't think this is what Moxie wanted. Moxie as far as I know is still involved in the project and is the source of decisions such as requiring a phone number. My understanding is he is leaning hard on "encryption for anyone and everyone" over all other considerations such as decentralization. A common criticism is "huh, not very anarchist of him!" Which, maybe? If decisions like that can get Signal into as…
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on “Molly (Signal fork) has not been updated since 3 months and is vulnerable”Submitted The first messenger without user IDs as a story · 4 points
HN discussionhttps://simplex.chat/ Seems to take security and decentralization pretty far while keeping it convenient enough.
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on “Researchers discover security vulnerability in WhatsApp”Submitted SimpleX Chat as a story · 3 points
HN discussionCould you clarify with regarding to .onion? How would I set this up for SimpleX and how would I configure SimpleX to use it, on, say, Android and Linux? I believe to use Tor with SimpleX, you would have to use Orbot, for example. What would I have to set up and how, on Linux? Genuine question. I would much prefer to self-host it. I would also like to know how I would configure SimpleX on Android to use my own SMP se…
Comment linking /docs/server.html
on “Delta Chat is a decentralized and secure messenger app”Submitted SimpleX Chat v6.4.1: welcome your contacts, review members to protect groups as a story · 3 points
HN discussionhttps://simplex.chat/ Private messenger for desktop and mobile platforms. It's mostly written in Haskell except for UI.
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on “Haskell: A Great Procedural Language”Submitted SimpleX Chat: The first messenger without user IDs as a story · 3 points
HN discussion
