Simon Fell
@superfell.bsky.social
https://github.com/superfell https://hachyderm.io/@superfell
techcrunch.com/2025/09/05/x... shouldn't surprise anyone but quotes me so it's obviously good
X is now offering me end-to-end encrypted chat — you probably shouldn't trust it yet | TechCrunch
X's new encrypted messaging feature, XChat, has some red flags.
techcrunch.com
Never forget today, when, on this day in 1988, Zero Cool crashed 1,507 systems in one day.
For once, a very good headline, and of course @paolobacigalupi.bsky.social is not wrong here www.cpr.org/2025/07/12/i...
Acclaimed Colorado sci-fi author: Future stupider than I imagined
Paonia writer Paolo Bacigalupi reflects on 10 years since the publication of his climate thriller “The Water Knife.”
cpr.org
So yesterday on X someone from X engineering tweeted at me that X does, in fact, use HSMs and the key ceremonies are “coming soon.” I’ve updated the post but I’ll be honest this whole thing doesn’t fill me with good feelings.
I wrote a bit more about X’s new encrypted DMs and the Juicebox protocol. blog.cryptographyengineering.com/2025/06/09/a...
A bit more on Twitter/X’s new encrypted messaging
Matthew Garrett has a nice post about Twitter (uh, X)’s new end-to-end encryption messaging protocol, which is now called XChat. The TL;DR of Matthew’s post is that from a cryptographic…
blog.cryptographyengineering.com
If your DMs are “encrypted” but one org holds all the keys, you haven’t distributed trust – you’ve built a backdoor. Juicebox only works when boundaries are real. Separation isn’t optional. Replication != distribution.
Don’t Put All Your Juice in One Box
At Juicebox, we believe key recovery should be secure, user friendly, and actually… work. That means it has to be more than cryptographic theater. It has to reflect the real world, where systems get h...
juicebox.xyz
