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I just wrote up some docs on how to hide images in public rooms on Matrix in several clients.

Public Rooms

Matrix is often use for public online discussions. Being an interoperable protocol, it allows people using different providers to talk together onl...

If anyone was able to add info for more clients that would be awesome. Here's my change for reference:

GitHub

Document how to hide images in Element by andybalaam · Pull Request #2971 · matrix-org/matrix.org

As discussed within the Trust and Safety Research and Documentation Working Group. ✔️ Checklist Check for common mistakes: Wrap plain URLs...

Have you seen my video series "Writing a programming language"? I write the smallest, simplest possible language I can think of, and walk you through it.

Infosec.Exchange Video

Writing a programming language

A Video Service for Infosec.Exchange

#coding #video #python

Did I mention that Exclude Insecure Devices is coming?

"Exclude insecure devices" is coming

Matrix, the open protocol for secure decentralised communications

#matrix

Important message from my talk! Exclude Insecure Devices is coming! After April 2026 (or maybe even sooner), if your Matrix device is unverified, you will not be able to talk to someone who is using Element! Or any other client complying with MSC4153 #Matrix

Why do I have 2 passwords? How to talk about encryption in Matrix

Why do I have 2 passwords? How to talk about encryption in Matrix

Most modern software applications give total trust to the service provider. End-to-end encrypted (E2EE) services are different: the servi...

My talk on the concepts and words we should use to talk about encrypted messaging on Matrix. #MatrixConf2025 #matrix #video

Invisible Crypto: can Matrix be both secure and easy to use?

Invisible Crypto: can Matrix be both secure and easy to use?

The Invisible Crypto initiative intends to make Matrix easier to use by ensuring that encrypted messaging is secure by default, and the u...

My talk on our progress to make Matrix's encryption better and easier to use. #MatrixConf2025 #matrix #video

My talks at #MatrixConf2025 are tomorrow 14:00 CET and 16:00 CET. I am talking about our progress on "Invisible Crypto" and agreeing a shared terminology to talk about Matrix encryption. Watch live at

Watch the Conference Recordings

Follow along the Matrix Conference even if you couldn

. Recordings will be available later too. #matrix

Nice post on checking the security of your connection to an XMPP server from @npub10670...v57n

JMP Blog

Mitigating MITMs in XMPP

Submitted two(!) proposals for talks at the Matrix Conference[1]. If any are accepted I guess we'll find out whether I really am ready for the pre-talk stress (from which I have been taking a break for a year or so). [1]

Matrix Conference 2025 :: pretalx

#matrix

Poorly-copied answers ripped off from stackoverflow and wrapped in a patronising tone are putting stackoverflow out of business.

DEVCLASS

Stack Overflow seeks rebrand as traffic continues to plummet – which is bad news for developers • DEVCLASS

Stack Exchange, the company behind Stack Overflow and other question-and-answer sites, says it is “embarking on a rebrand […]

meaning there will be no more information to rip off.