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
| Website | https://frederikbraun.de/ |
| Location | Berlin, Germany :club_mate: |
| Pronouns | he/him |
| Signal username | freddy.{default HTTPS port} |
Hey, any plans for the end of this month already?
If not, consider visiting the beautiful city of Vienna and joining me at the OWASP AppSec from June 22nd to 26th.
I will be talking about my favorite topic: Cross-Site Scripting (XSS)
My presentation is titled "The Devil is in the Defaults" and I'll share what I think we as web developers, as security engineers, as browser folks and standards people can now do to fix this once and for all ;)
When we said that we found and fixed hundreds of bugs in Firefox using AI, people were skeptical and said: Where are the bugs?
Well, here they are. We are unhiding 12 security bugs that are representative of the issues we have found.
https://hacks.mozilla.org/2026/05/behind-the-scenes-hardening-firefox/.
Jetzt lauf ich schon seit 12 Wochen. Drei mal die Woche.
Es ist nicht immer toll, ich find es wirklich nicht das beste der Welt. Aber ich fühle mich weniger schnell erschöpft, wenn ich Treppen laufe oder es sonst eilig habe. Und meine Stimmung ist nach dem Laufen auch echt gut.
Und heute kann ich sagen, ich bin der schnellste Freddy aller Zeiten. Bis jetzt. 😊
Edit: All my ears are gone. Sorry 😅😅
At #39c3 and in need of fox ears? Join us at the Mozilla Community session on Day 2 - https://events.ccc.de/congress/2025/hub/en/event/detail/mozillians-community-meetup
