Diego F. Aranha
@dfaranha.bsky.social
730 followers 530 following 150 posts
Associate Professor of Cryptographic Engineering at Aarhus University. https://dfaranha.github.io/
Posts Media Videos Starter Packs
Reposted by Diego F. Aranha
matthewdgreen.bsky.social
Germany has agreed to stop ChatControl for now, due to huge amounts of public pressure. Good job! The bad news is that it could come back as soon as December, and the German government has interpreted the feedback as a need to “moderate” the proposal.
Reposted by Diego F. Aranha
matthewdgreen.bsky.social
I hear that the EU ChatControl situation is going better today. I cannot believe how close the EU has gotten to passing this crazy regulation.
Reposted by Diego F. Aranha
keithwdickinson.bsky.social
Today is a day when arts degrees are worthless, but the product of those degrees is so valuable it would kill an entire industry if they were made to pay for it.
dfaranha.bsky.social
You're a much better person than me, Dan :)
dfaranha.bsky.social
Someone please make me understand how Denmark can be at the same time freaking out about hybrid war with Russia AND pushing for government-mandated spyware as Chat Control.
Reposted by Diego F. Aranha
signal.org
We are alarmed by reports that Germany is on the verge of a catastrophic about-face, reversing its longstanding and principled opposition to the EU’s Chat Control proposal which, if passed, could spell the end of the right to privacy in Europe. signal.org/blog/pdfs/ge...
signal.org
dfaranha.bsky.social
Sounds just like the Justice Minister of Denmark, who is pushing Chat Control with a crime-free society narrative.

bsky.app/profile/robe...
robertscotthorton.bsky.social
Larry Ellison envisions a surveillance state in which techbros rule. '“Citizens will be on their best behavior, because we’re constantly recording and reporting everything that is going on,” Ellison said in an hour-long Q&A during Oracle’s Financial Analyst Meeting last week.'
Larry Ellison predicts rise of the modern surveillance state where ‘citizens will be on their best behavior’ | Fortune
Oracle's Larry Ellison believes citizens and police alike will be under constant surveillance of each other.
fortune.com
Reposted by Diego F. Aranha
karmel80.bsky.social
<<“brain gain” is exactly what we have experienced. As Danish companies have succeeded globally, they have sought out the best and brightest in their respective fields from across the world. The number of foreign workers in Copenhagen has more than doubled in the last decade.>> @madshvid.bsky.social
Reposted by Diego F. Aranha
natanael.bsky.social
"Bad news: The proposal is going forward to be voted on on October 14th, and there's still no blocking minority achieved, as Germany reverted its position to undecided.

Good news: There is still time to fight back!"

Shut this monstrosity down NOW
The battle to stop Chat Control continues, act now!
Unfortunately, the battle against Chat Control continues this month. For human rights, for civil liberties, for safety, and for democracy, this privacy-wrecking proposal must be stopped. We need your ...
www.privacyguides.org
dfaranha.bsky.social
Eu li podosfera errado e bateu uma tristeza profunda repentina :(
dfaranha.bsky.social
The impact of Alfred Menezes in cryptography is profound. Francisco RH and I are organizing an afternoon session in Latincrypt to celebrate Alfred's career:

menezesfest.info

If you're coming to Medellín, consider attending!
MenezesFest 2025
MenezesFest brings together researchers, colleagues, and friends to celebrate the career and impact of Alfred Menezes.
menezesfest.info
dfaranha.bsky.social
Oh damn, let me repost.
dfaranha.bsky.social
If ChatControl needs national security exemptions to *not* weaken the security of the state, what makes one believe that it will *not* weaken the security of everyone else?

bsky.app/profile/matt...
matthewdgreen.bsky.social
I know it’s been said again and again, but what does it say about ChatControl that its backers keep explicitly *exempting* law enforcement and national security accounts from content scanning?
Reposted by Diego F. Aranha
matthewdgreen.bsky.social
I know it’s been said again and again, but what does it say about ChatControl that its backers keep explicitly *exempting* law enforcement and national security accounts from content scanning?
Reposted by Diego F. Aranha
Reposted by Diego F. Aranha
alecmuffett.bsky.social
I'm sympathetic, but I do think it is charming how teh lawyerz believe that you can legislate your way out of a threat model.

"No one would ever do that, it's illegal."
alysiablackham.bsky.social
This is a serious breach of privacy. Yet employee records have limited protection under federal privacy law. We urgently need legal change to better protect employee privacy.

dx.doi.org/10.2139/ssrn...
Reposted by Diego F. Aranha
tjesi.bsky.social
The EU Parliament has published a new proposal for Chat Control to mass-surveil all digital communication in Europe. The proposal is ineffective, weakens secure communication, and violates basic human privacy. This must be stopped immediately. #ChatControl
csa-scientist-open-letter.org/Sep2025
csa-scientist-open-letter.org
dfaranha.bsky.social
The EU wants to spend your money to assemble a giant mass surveillance machine with little effect on harm against children. Chat Control is not effective, weakens security for all and does not respect privacy. Contact your EU representatives and let them know.

csa-scientist-open-letter.org/Sep2025
csa-scientist-open-letter.org
Reposted by Diego F. Aranha
andreavbasso.bsky.social
More than 500 researchers have signed an open letter against the dangerous EU proposal on chat control.

The proposal remains ineffective, undoes decades of results in E2E encryption, and threatens the privacy of half a billion citizens.

csa-scientist-open-letter.org/Sep2025
csa-scientist-open-letter.org
dfaranha.bsky.social
It was too late when I figured out this was not about cryptography.
bsky.app/profile/arju...
arjunraj.bsky.social
Very true. In my experience, there are three aspects of “good hands”. 1. Be low entropy: when in doubt, do things in an orderly manner. 2. Make good micro decisions: observe what matters and what doesn’t in any given protocol. 3. Make fewer errors. Of these, I think 2 is the most learnable.
baym.lol
Every few months the "good lab hands" thing comes up and it misses a key point: you can learn to have good hands. Training matters.

Good hands aren't some magic gift from the PCR gods, you have to develop them through directed repetitive practice, like any other skill
dfaranha.bsky.social
Até porque quem está decidindo sobre a implantação são os próprios governos, que nunca vão admitir poderem ser maliciosos. De qualquer forma, nem a versão honesta funciona porque a taxa de falsos positivos é proibitiva.