Georgios Kontaxis
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Georgios Kontaxis
@georgios.bsky.99rst.org
Privacy and Security.
Ph.D. in Computer Science.
https://www.cs.columbia.edu/~kontaxis/
Reposted by Georgios Kontaxis
Kohler has dropped the "end-to-end encryption" language from their website. It now reads "data encryption at rest and in transit."
December 5, 2025 at 12:22 AM
When your toilet has a camera and its "end-to-end data encryption" turns out to be sharing the data with the manufacturer over HTTPS. 🤷‍♂️ And by the way the manufacturer may use your data to train its toilet AI. varlogsimon.leaflet.pub/3m6zrw6k2bs2p
Kohler Can Access Data and Pictures from Toilet Camera It Describes as “End-to-End Encrypted” - /var/log/simon
Claimed end-to-end privacy doesn’t fully conceal your rear-end data
varlogsimon.leaflet.pub
December 5, 2025 at 3:18 PM
We've given up decentralization to purchase a little temporary convenience and now we have neither decentralization nor convenience.
November 18, 2025 at 2:25 PM
Reposted by Georgios Kontaxis
It's time to make HTTPS the web's default, and reap the full security benefit from years worth of HTTPS adoption!
security.googleblog.com/2025/10/http...
HTTPS by default
One year from now, with the release of Chrome 154 in October 2026, we will change the default settings of Chrome to enable “Always Use Secu...
security.googleblog.com
October 28, 2025 at 5:17 PM
Reposted by Georgios Kontaxis
Στις 5 Νοεμβρίου λήγει η διορία της διαδικασίας έκδοσης του Προσωπικού Αριθμού.Με τη γεννήτρια γραμμάτων προσωπικού αριθμού μπορείτε να επιλέξετε εσείς έναν καλό συνδυασμό γραμμάτων για τον προσωπικό σας αριθμό. Θα τη βρείτε στο www.balab.aueb.gr/genpa/
November 1, 2025 at 8:17 PM
Europe’s privacy regulations have brought Internet users face to face with myriads of annoying cookie-consent prompts. But they’ve also highlighted how ubiquitous online activity tracking and targeting is. We should focus on making such threats to privacy less common. www.politico.eu/article/euro...
Europe’s cookie law messed up the internet. Brussels wants to fix it.
The European Commission wants to take a bite out of privacy rules that force websites to run cookie banners.
www.politico.eu
September 30, 2025 at 2:34 AM
Reposted by Georgios Kontaxis
Why I Choose Email Over Messaging

My colleagues and friends know that I prefer to communicate with them via email rather than chat messaging. There are many benefits in such a choice. You may want to consider them and adopt the same stance.

www.spinellis.gr/blog/2025092...
September 26, 2025 at 5:21 PM
Reposted by Georgios Kontaxis
We've just released #WriteFreely v0.16, with a ton of improvements for the fediverse, including support for Likes, the Creator tag, and better look for your articles on microblogging platforms!

Read about all the new changes and grab the latest version on our blog: blog.writefreely.org/version-0-16
Version 0.16
WriteFreely v0.16 is finally here, and it brings a ton of improvements, especially for the fediverse! We've also fixed some long-standing...
blog.writefreely.org
August 29, 2025 at 8:24 PM
Reposted by Georgios Kontaxis
Since search is dead, how soon do you think Google Scholar is headed for the Google Graveyard? I'm betting it's soon, and academia is NOT prepared
Google Scholar Is Doomed
Academia built entire careers on a free Google service with zero guarantees. What could go wrong?
hannahshelley.neocities.org
August 13, 2025 at 1:28 AM
Reposted by Georgios Kontaxis
The ruling, which holds that Meta tracking tech violates GDPR, sets precedent which the court acknowledged will allow countless FB users to sue w/o “explicitly demonstrating individual damages.” Experts: Decision leaves countless websites, apps exposed to huge fines
therecord.media/german-court...
German court rules Meta tracking technology violates European privacy laws
The court in Leipzig ruled that Meta must pay €5,000 ($5,900) to a German Facebook user who sued the platform for embedding tracking technology in third-party websites — a ruling that could open the d...
therecord.media
July 9, 2025 at 9:02 PM
Reposted by Georgios Kontaxis
“In Australia, Canada, Greece and the US, call center agents say they’ve been repeatedly mistaken for AI. These people, who spend hours talking to strangers, are experiencing surreal conversations, where customers ask them to prove they are not machines.”
Call Center Workers Are Tired of Being Mistaken for AI
As more workers are asked by strangers if they're bots, surreal conversations are prompting introspection in the industry about what it means to be human.
www.bloomberg.com
June 29, 2025 at 12:53 AM
Reposted by Georgios Kontaxis
📅 500 days from now will mark the 30th anniversary of Aleph One’s “Smashing the Stack for Fun and Profit”.

🛡️ Today, CISA and NSA released a joint guide on reducing memory-related vulnerabilities in software. 🙏
www.cisa.gov/resources-to...

💭 How much progress can we make before this milestone?
www.cisa.gov
June 24, 2025 at 10:56 PM
Reposted by Georgios Kontaxis
If I were designing the Airdrop user interface I would make sure that destination devices don’t randomly slide out from under your mouse and get replaced with other devices, ever. Just saying.
June 13, 2025 at 4:35 PM
Reposted by Georgios Kontaxis
Those are the buttons you press to activate the flux capacitor after you hit 88 mph.
Old
School
🔴 🔴
April 5, 2025 at 2:10 AM
Excited to see two-hop VPN architectures gaining traction in the industry! I remember pitching the idea to my colleagues at Apple and feeling super optimistic about network privacy when iCloud Relay launched. Now @obscura.net and @mullvad.bsky.social are here too. (mullvad.net/en/blog/mull...)
Mullvad has partnered with Obscura VPN | Mullvad VPN
Today we are announcing a partnership with Obscura VPN, a newly launched two-party VPN service that uses our WireGuard VPN servers as its “exit hop”.
mullvad.net
March 6, 2025 at 7:36 PM
Reposted by Georgios Kontaxis
Someone passed this along: Mullvad is debuting a new traffic-analysis prevention service that adds generated cover traffic and uses constant packet sizes. mullvad.net/en/blog/intr...
Introducing Defense against AI-guided Traffic Analysis (DAITA) | Mullvad VPN
Even if you have encrypted your traffic with a VPN (or the Tor Network), advanced traffic analysis is a growing threat against your privacy. Therefore, we now introduce DAITA.
mullvad.net
March 6, 2025 at 1:59 PM
Reposted by Georgios Kontaxis
Folks: remember that your iMessages (and text messages) are typically backed up to Apple as part of your iCloud backup. If you don’t have Advanced Data Protection turned on, those may be readable by Apple, governments with warrants, and anyone who hacks Apple.
February 21, 2025 at 3:29 PM
Reposted by Georgios Kontaxis
New public statement from Apple:

“As of Friday, February 21, Apple can no longer offer Advanced Data Protection as a feature to new users in the UK.”
February 21, 2025 at 3:07 PM
Reposted by Georgios Kontaxis
Keep in mind that iMessages _once backed up to iCloud_ are only encrypted if you have ADP. So that encryption is broken if/when you (or the person/people you talk to) back up to an iCloud account without ADP.
February 21, 2025 at 3:20 PM
Reposted by Georgios Kontaxis
Breaking: Apple pulls end-to-end encrypted storage option from UK after secret order for a back door. www.washingtonpost.com/technology/2...
Apple yanks encrypted storage in U.K. instead of allowing backdoor access
Apple disabled its most secure data storage offering for new customers in the United Kingdom on Friday rather than comply with a secret government order.
www.washingtonpost.com
February 21, 2025 at 3:07 PM
Reposted by Georgios Kontaxis
Your privacy is very important to us. This is why we're sharing your data with our 278 advertising partners, and our partners' 4,728 partners, and their partners' 87,392 partners, UNDER THE FOLLOWING TERMS
February 12, 2025 at 11:41 PM
Every time there’s a data breach where the last four credit card digits are exposed people shrug it off. Data minimization works.
February 4, 2025 at 4:57 PM
Reposted by Georgios Kontaxis
The one place where end-to-end encryption is “weakest”, ie where deployment rates are lowest, is *cloud backup*. This is, coincidentally, one of the best places for governments to obtain data.
February 1, 2025 at 4:38 PM
Reposted by Georgios Kontaxis
AI prompt results aren’t protected by copyright, says US Copyright Office
AI prompt results aren’t protected by copyright, says US Copyright Office
AI prompts are different from Jackson Pollock’s paintings, apparently.
buff.ly
January 30, 2025 at 4:10 PM