Konstantinos Kitsios
kitsios.bsky.social
Konstantinos Kitsios
@kitsios.bsky.social
PhD student @ University of Zürich.

Interested in software engineering and software testing.

https://kitsiosk.github.io
Pinned
🐞 After a bug is patched, how can we increase our confidence that it will not reappear in the future?

We address this question in our paper recently accepted to @aseconf.bsky.social 2025! 🎉 1/5
🧩 Can semantic code clone detectors really detect clones in-the-wild?

🎉 We address this question in our paper “Detecting Semantic Clones of Unseen Functionality,” recently accepted to @aseconf.bsky.social!

📄 Pre-print: arxiv.org/abs/2510.04143
💻 Code: github.com/kitsiosk/uns...
[1/4]
October 7, 2025 at 3:29 PM
Reposted by Konstantinos Kitsios
Europe’s digital backbone is built on foreign rails.

In 🇩🇪 DE (58%), 🇦🇹 AT (59%), 🇧🇪 BE (80%), 🇮🇹 IT (69%), 🇱🇺 LU (78%), and 🇳🇱 NL (81%), publicly listed companies rely on US email, and the wider stack behind it.

Read the full study for additional details. 👇
Europe’s tech sovereignty watch | Proton for Business
Europe’s biggest businesses run on US tech — putting its privacy and sovereignty at risk. Read our study on how bad the problem is and why we urgently need a Europe-first tech policy.
proton.me
September 17, 2025 at 4:03 PM
Reposted by Konstantinos Kitsios
My keynote from Open Source Summit Europe 2025 is now up. 13 pretty packed minutes.

https://youtu.be/YEBBPj7pIKo?si=DBxSCFuqkFQBRdOw
September 8, 2025 at 6:55 AM
Reposted by Konstantinos Kitsios
Maybe listening to Greek ρεμπέτικο (rebetiko) while programming will fill our souls with meaning that LLMs can never bring us.
September 4, 2025 at 8:27 AM
🐞 After a bug is patched, how can we increase our confidence that it will not reappear in the future?

We address this question in our paper recently accepted to @aseconf.bsky.social 2025! 🎉 1/5
September 3, 2025 at 8:58 AM
Reposted by Konstantinos Kitsios
AI crawlers are wrecking the open internet.

My small side project - techpays .com - used to generate below 100GB of traffic per month. It’s on Render where 500GB/month included, above it’s $30 per 100GB.

Meta’s AI crawler + other bots have pushed it to 700GB+ per month

WTH
March 26, 2025 at 8:53 PM
Reposted by Konstantinos Kitsios
Users deserve data protections. Sign our petition to help them get it. mzl.la/41YuAPG
March 24, 2025 at 2:50 PM
Reposted by Konstantinos Kitsios
aischolar.0x434b.dev Pretty cool project by @434b.bsky.social: A neat web interface to explore security (and in particular: Fuzzing) papers with AI summaries. Seems super useful to get/stay up to date with recent papers :)
AIScholar - Paper Database
aischolar.0x434b.dev
February 4, 2025 at 3:29 PM
Reposted by Konstantinos Kitsios
As a software eng, it is inherently satisfying to see an open approach beat close approaches in an innovative field.

Linux is open: Windows is closed

Llama, Deepseek, Mistral are open: OpenAI, Gemini, Anthropic& many others others closed

Closed approaches winning almost always lead to monopolies.
January 29, 2025 at 8:28 AM
Reposted by Konstantinos Kitsios
This is just a reminder that training on test data is all you need to achieve SOTA perf

OpenAI had access to all of FrontierMath data from the beginning, but they verbally agreed that data would not be used in model training. Although there was a legal agreement not to disclose the partnership
January 19, 2025 at 3:47 PM
Reposted by Konstantinos Kitsios
Listened to the Telepathy Tapes. It is a great illustration of what you get when incompetent people try to do science. The show is actively misleading (and the makers know it) with purely political and financial goals (the rest is confirmation bias combined with incompetence).
January 11, 2025 at 4:34 PM
Staubbach Falls in the Swiss Alps 🇨🇭
January 6, 2025 at 12:20 AM
Reposted by Konstantinos Kitsios
What Dutch directness looks like. The CEO of ASML was pushed by US partners how ASML supplying devices to China could enable eg actions against the Uyghurs. He responded asking how this is different to what gun manufacturers might enable!

From Focus: the ASML Way by Marc Hijink
January 5, 2025 at 10:36 AM
Reposted by Konstantinos Kitsios
The more simplistic the take you see on here, the more it generalizes, the more it is an act of politics, not science.

If the take comes from a scientist, they know they have no evidence for their take, or they would use it.
January 4, 2025 at 11:08 AM
Reposted by Konstantinos Kitsios
I see so much FUD about the future of sw engineering, mostly from non-devs. Along the lines of “soon anyone can spin off AI agents in bulk that act as hundreds of devs.”

A false premise. Just open your airline app that is built by ~hundreds of devs over 10+ years
December 21, 2024 at 6:16 AM
Reposted by Konstantinos Kitsios
I posted the exact same question on Threads, X and Bluesky, asking what IDEs devs liked the most.

Despite having 10x as many "followers" on X, Bluesky, and a similar one on Threads, Bluesky is most definitely where the most humans respond to a technical post.

I love it here!
My biggest takeaway: the plurality of your audience is on Bluesky
November 26, 2024 at 5:41 PM
Reposted by Konstantinos Kitsios
Automattic -the creator of WordPress, a company raising $950M in VC funding- took a paid WordPress plugin built & owned by another dev and re-published it, making it free.

If you have a business selling a paid WP plugin: Automattic can null it, anytime.

A new low.

www.youtube.com/watch?v=nYHK...
ACF Pro: Nulled by WordPress.org
YouTube video by David McCan
www.youtube.com
November 25, 2024 at 8:40 AM