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  • Open on social.security.plumbing

Frederik Braun �

@freddy@social.security.plumbing
mastodon 4.5.7

A web/browser security nerd. Working on security for Firefox and the web at Mozilla. Taught web security at Ruhr Uni Bochum.

I'm often spend my summer on multi-week #bikepacking trips with the family.

The posts here are my own and I do not speak for my employer

0 Followers
0 Following
Joined May 05, 2022
Website:
https://frederikbraun.de/
Location:
Berlin, Germany :club_mate:
Pronouns:
he/him
Signal username:
freddy.{default HTTPS port}

Posts

freddy
Frederik Braun �
@freddy@social.security.plumbing

A web/browser security nerd. Working on security for Firefox and the web at Mozilla. Taught web security at Ruhr Uni Bochum. I'm often spend my summer on multi-week # bikepacking trips with the family. The posts here are my own and I do not speak for my employer

social.security.plumbing
Frederik Braun �
Frederik Braun �
@freddy@social.security.plumbing

A web/browser security nerd. Working on security for Firefox and the web at Mozilla. Taught web security at Ruhr Uni Bochum. I'm often spend my summer on multi-week # bikepacking trips with the family. The posts here are my own and I do not speak for my employer

social.security.plumbing
@freddy@social.security.plumbing · 2d ago

This is just to say that Meta/Instagram are wrong in deprecating encrypted direct messages. This change is setting a dangerous precedent. DMs need to be private (and therefore encrypted).

We should not let them get away with it, otherwise more apps and platforms will follow.

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freddy
Frederik Braun �
@freddy@social.security.plumbing

A web/browser security nerd. Working on security for Firefox and the web at Mozilla. Taught web security at Ruhr Uni Bochum. I'm often spend my summer on multi-week # bikepacking trips with the family. The posts here are my own and I do not speak for my employer

social.security.plumbing
Frederik Braun �
Frederik Braun �
@freddy@social.security.plumbing

A web/browser security nerd. Working on security for Firefox and the web at Mozilla. Taught web security at Ruhr Uni Bochum. I'm often spend my summer on multi-week # bikepacking trips with the family. The posts here are my own and I do not speak for my employer

social.security.plumbing
@freddy@social.security.plumbing · Mar 09, 2026

RE: @freddy@social.security.plumbing

Also look at that fine game of window tiling (bottom / top) AND Firefox side-by-side split tab view (left/right). Currently in preview with @firefoxnightly@mastodon.social :)

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freddy
Frederik Braun �
@freddy@social.security.plumbing

A web/browser security nerd. Working on security for Firefox and the web at Mozilla. Taught web security at Ruhr Uni Bochum. I'm often spend my summer on multi-week # bikepacking trips with the family. The posts here are my own and I do not speak for my employer

social.security.plumbing
Frederik Braun �
Frederik Braun �
@freddy@social.security.plumbing

A web/browser security nerd. Working on security for Firefox and the web at Mozilla. Taught web security at Ruhr Uni Bochum. I'm often spend my summer on multi-week # bikepacking trips with the family. The posts here are my own and I do not speak for my employer

social.security.plumbing
@freddy@social.security.plumbing · Mar 02, 2026

I was invited to join @shoptalkshow@front-end.social and talk about my favorite topic. The HTML Sanitizer API and `setHTML()`. Give it a spin in your favorite podcast player :) https://shoptalkshow.com/704/

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freddy
Frederik Braun �
@freddy@social.security.plumbing

A web/browser security nerd. Working on security for Firefox and the web at Mozilla. Taught web security at Ruhr Uni Bochum. I'm often spend my summer on multi-week # bikepacking trips with the family. The posts here are my own and I do not speak for my employer

social.security.plumbing
Frederik Braun �
Frederik Braun �
@freddy@social.security.plumbing

A web/browser security nerd. Working on security for Firefox and the web at Mozilla. Taught web security at Ruhr Uni Bochum. I'm often spend my summer on multi-week # bikepacking trips with the family. The posts here are my own and I do not speak for my employer

social.security.plumbing
@freddy@social.security.plumbing · Mar 01, 2026

Dinge im Internet kaufen ist einfach so maximal kaputt, warum? Suche nach Kabelkanal viertelrund und finde einfach eine Millionen Kabelkanälen in Eckig, Rund, Halbrund und ellipsoid oder neonfarben. WAS ZUR HÖLLE.

Hat schon ein Grund warum ich viertelrund eingetippt habe.

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freddy
Frederik Braun �
@freddy@social.security.plumbing

A web/browser security nerd. Working on security for Firefox and the web at Mozilla. Taught web security at Ruhr Uni Bochum. I'm often spend my summer on multi-week # bikepacking trips with the family. The posts here are my own and I do not speak for my employer

social.security.plumbing
Frederik Braun �
Frederik Braun �
@freddy@social.security.plumbing

A web/browser security nerd. Working on security for Firefox and the web at Mozilla. Taught web security at Ruhr Uni Bochum. I'm often spend my summer on multi-week # bikepacking trips with the family. The posts here are my own and I do not speak for my employer

social.security.plumbing
@freddy@social.security.plumbing · Feb 24, 2026

New blog post 😊

If you replace all the innerHTML with setHTML, you will be free from XSS and other injection attacks. Goodbye innerHTML, Hello setHTML

https://hacks.mozilla.org/2026/02/goodbye-innerhtml-hello-sethtml-stronger-xss-protection-in-firefox-148/

(Kudos to our folks for specifying, building and shipping!)

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