Diego F. Aranha
@dfaranha.bsky.social
Associate Professor of Cryptographic Engineering at Aarhus University. https://dfaranha.github.io/
Reposted by Diego F. Aranha
I wrote a short blog post on the WhatsApp lawsuit, or whatever it is. blog.cryptographyengineering.com/2026/02/02/w...
WhatsApp Encryption, a Lawsuit, and a Lot of Noise
It’s not every day that we see mainstream media get excited about encryption apps! For that reason, the past several days have been fascinating, since we’ve been given not one but sever…
blog.cryptographyengineering.com
February 3, 2026 at 1:17 AM
I wrote a short blog post on the WhatsApp lawsuit, or whatever it is. blog.cryptographyengineering.com/2026/02/02/w...
Reposted by Diego F. Aranha
It has gotten so bad that the @nytimes.com has stopped using the passive voice to describe the violence.
January 24, 2026 at 5:15 PM
It has gotten so bad that the @nytimes.com has stopped using the passive voice to describe the violence.
Reposted by Diego F. Aranha
Software error in continuous glucose monitors caused 736 serious injuries, and seven deaths. abbott.mediaroom.com/press-releas...
January 23, 2026 at 11:05 AM
Software error in continuous glucose monitors caused 736 serious injuries, and seven deaths. abbott.mediaroom.com/press-releas...
Reposted by Diego F. Aranha
Bad news for other minorities, for the media, for civil society, the rule of law and democracy, too
January 15, 2026 at 1:19 PM
Bad news for other minorities, for the media, for civil society, the rule of law and democracy, too
Bad news for immigrants in Europe.
January 15, 2026 at 12:42 PM
Bad news for immigrants in Europe.
Reposted by Diego F. Aranha
Come work with Peter Scholl @schollster.bsky.social and me in Aarhus!
Internships in MPC available, for both recent PhD graduates and current PhD students...
mpcinthewild.github.io
This is a project funded by the Zama Cryptanalysis Grant program
mpcinthewild.github.io
This is a project funded by the Zama Cryptanalysis Grant program
MPC in the Wild is a research project that aims to study the real-world implementation security of MPC protocols, in particular, the gap between assumptions on the theory side and implementation choices made in practice.
mpcinthewild.github.io
December 17, 2025 at 12:17 PM
Come work with Peter Scholl @schollster.bsky.social and me in Aarhus!
If you want to impose strict deadline and word counts, enable the REBUTTAL feature in HotCRP which gives word count to authors and a system-wide deadline.
December 16, 2025 at 12:04 PM
If you want to impose strict deadline and word counts, enable the REBUTTAL feature in HotCRP which gives word count to authors and a system-wide deadline.
If you believe that smart people cannot do utterly dumb things, just look at the Eurocrypt'26 rebuttal process.
December 16, 2025 at 11:55 AM
If you believe that smart people cannot do utterly dumb things, just look at the Eurocrypt'26 rebuttal process.
And started a Cryptanalysis division in the kitchen!
December 9, 2025 at 2:51 PM
And started a Cryptanalysis division in the kitchen!
Achievement unlocked.
December 9, 2025 at 11:16 AM
Achievement unlocked.
Reposted by Diego F. Aranha
Know your rights. Protect your neighbors.
New York is — and always will be — a city for all immigrants.
New York is — and always will be — a city for all immigrants.
December 7, 2025 at 5:03 PM
Know your rights. Protect your neighbors.
New York is — and always will be — a city for all immigrants.
New York is — and always will be — a city for all immigrants.
Reposted by Diego F. Aranha
CRITICAL security vulnerability in a really popular web framework React server. Maximum severity (CVSS: 10.0). Unauthenticated remote code execution. May be WORMABLE. Patch immediately. This could get very nasty. Patch this, and all that depends on it (like Next.js) react.dev/blog/2025/12...
December 3, 2025 at 5:44 PM
CRITICAL security vulnerability in a really popular web framework React server. Maximum severity (CVSS: 10.0). Unauthenticated remote code execution. May be WORMABLE. Patch immediately. This could get very nasty. Patch this, and all that depends on it (like Next.js) react.dev/blog/2025/12...
Reposted by Diego F. Aranha
I think it’s pretty clear at this point that one of the main impacts of LLMs is to disrupt thinking: to make it so that far too many people never properly learn how to do it, and then to control the output so there are thoughts that people never learn how to think.
November 24, 2025 at 5:18 PM
I think it’s pretty clear at this point that one of the main impacts of LLMs is to disrupt thinking: to make it so that far too many people never properly learn how to do it, and then to control the output so there are thoughts that people never learn how to think.
The "What are the best gifts for men?" in the end is some dystopian shit.
November 24, 2025 at 7:24 PM
The "What are the best gifts for men?" in the end is some dystopian shit.
Reposted by Diego F. Aranha
My thoughts on the IACR election issue (since many have asked privately):
- This was an honest accident, and Moti Yung deserves being cut some slack. Yes, it’s a silly mistake, but mistakes happen.
- The IACR board reacted excellently and scheduled timely follow up elections.
Continued in thread
- This was an honest accident, and Moti Yung deserves being cut some slack. Yes, it’s a silly mistake, but mistakes happen.
- The IACR board reacted excellently and scheduled timely follow up elections.
Continued in thread
November 23, 2025 at 12:53 PM
My thoughts on the IACR election issue (since many have asked privately):
- This was an honest accident, and Moti Yung deserves being cut some slack. Yes, it’s a silly mistake, but mistakes happen.
- The IACR board reacted excellently and scheduled timely follow up elections.
Continued in thread
- This was an honest accident, and Moti Yung deserves being cut some slack. Yes, it’s a silly mistake, but mistakes happen.
- The IACR board reacted excellently and scheduled timely follow up elections.
Continued in thread
Reposted by Diego F. Aranha
Against ‘chat control’: we can’t eliminate child abuse by eliminating privacy
Against ‘chat control’: we can’t eliminate child abuse by eliminating privacy
Banning online anonymity tools like Tor won’t stop crime. It will only drive people underground and normalize government control over the internet
www.theguardian.com
October 13, 2025 at 12:44 PM
Against ‘chat control’: we can’t eliminate child abuse by eliminating privacy
Reposted by Diego F. Aranha
The “age verification” and the “human identification” problem are the same problem. It upsets me to be around people who think they’re working on the first, but don’t understand they’re actually working on the second.
a woman in a purple sweater says they are the same picture
ALT: a woman in a purple sweater says they are the same picture
media.tenor.com
October 15, 2025 at 3:12 PM
The “age verification” and the “human identification” problem are the same problem. It upsets me to be around people who think they’re working on the first, but don’t understand they’re actually working on the second.
Reposted by Diego F. Aranha
"Governments across the world are expanding surveillance, weakening encryption, and curtailing freedoms under the guise of staunching the proliferation of sexual images and videos of children" https://www.theguardian.com/commentisfree/2025/oct/13/chat-control-child-abuse-internet-privacy #Privacy
Against ‘chat control’: we can’t eliminate child abuse by eliminating privacy
Banning online anonymity tools like Tor won’t stop crime. It will only drive people underground and normalize government control over the internet
www.theguardian.com
October 14, 2025 at 5:00 PM
"Governments across the world are expanding surveillance, weakening encryption, and curtailing freedoms under the guise of staunching the proliferation of sexual images and videos of children" https://www.theguardian.com/commentisfree/2025/oct/13/chat-control-child-abuse-internet-privacy #Privacy
Reposted by Diego F. Aranha
This is amazing research by Nadia Heninger and her co-authors Wenyi Morty Zhang, Annie Dai, Keegan Ryan, Dave Levin and Aaron Schulman. TL;DR a huge number of satellite links over our heads are totally unencrypted. satcom.sysnet.ucsd.edu
🛰️ SATCOM Security
Research project homepage for SATCOM Security: papers, source code, and recent satellite communications vulnerabilities.
satcom.sysnet.ucsd.edu
October 14, 2025 at 1:16 AM
This is amazing research by Nadia Heninger and her co-authors Wenyi Morty Zhang, Annie Dai, Keegan Ryan, Dave Levin and Aaron Schulman. TL;DR a huge number of satellite links over our heads are totally unencrypted. satcom.sysnet.ucsd.edu
Reposted by Diego F. Aranha
The 400 richest Americans are now worth a record $6.6 trillion.
The entire bottom 50% of America is worth just $4.2 trillion.
Read that back.
When 400 people control more wealth than half a country’s population, we have a very serious problem.
The entire bottom 50% of America is worth just $4.2 trillion.
Read that back.
When 400 people control more wealth than half a country’s population, we have a very serious problem.
October 12, 2025 at 11:30 PM
The 400 richest Americans are now worth a record $6.6 trillion.
The entire bottom 50% of America is worth just $4.2 trillion.
Read that back.
When 400 people control more wealth than half a country’s population, we have a very serious problem.
The entire bottom 50% of America is worth just $4.2 trillion.
Read that back.
When 400 people control more wealth than half a country’s population, we have a very serious problem.
Reposted by Diego F. Aranha
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.
October 10, 2025 at 11:36 AM
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
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.
October 7, 2025 at 8:20 PM
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.
This dude is a hero: www.politico.eu/article/one-...
One-man spam campaign ravages EU ‘chat control’ bill
A software developer from Denmark is having an outsized influence on a hotly debated law to break open encrypted apps.
www.politico.eu
October 8, 2025 at 7:17 PM
This dude is a hero: www.politico.eu/article/one-...
Reposted by Diego F. Aranha
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.
Nick Clegg says asking artists for use permission would ‘kill’ the AI industry
Nick Clegg says asking artists for use permission would ‘kill’ the AI industry
Paul McCartne, Elton John and others signed an open letter.
buff.ly
October 8, 2025 at 10:29 AM
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.