iiinova — where your digital self keeps evolving

strufe @strufe.bsky.social · 08/10/2026

We did "Red-teaming policy", targeting the Anonymization Guideline of EDPB, with CS/legal scholars and regulators/international organizations. Great fun, and enlightening to identify vulns in regulation, and design exploits. Thanks heaps @hodthoughts.bsky.social! More: ps.tm.kit.edu/english/1094...

Red-teaming regulation, and how it works

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strufe @strufe.bsky.social · 03/10/2026

Random discovery at the bookshop, just finished and so happy it found me! Cyberpunk brought to the new millennium in the best possible way ❤️ Thank you so much for the ride @ianthegreen.bsky.social

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strufe @strufe.bsky.social · 31/07/2026

Graduation day at @kit.edu and together with a bunch of other great graduates from our group Annika got the KIT part of her double degree - and won the price for the best thesis of the last year! Very much deserved, a huge congratulations from the entire chair (and the INRIA team, too, we're sure)!

Annika receiving her degree and best thesis award

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strufe @strufe.bsky.social · 24/06/2026

😂 USENIX 🤣 giving 3 minute (in words: three minute) slots to full papers for presentation, now 🥸 Makes you wonder why anybody would still go to conferences in the first place, anymore 🥳

Usenix giving 3 minute slots for full paper presentations, now.

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strufe @strufe.bsky.social · 16/06/2026

❤️ When to the PETS lecture*, your students bring pets ❤️ (*where PETS is our Privacy Enhancing Technologies lecture, we apologise to francophones)

Plush pets brought by our students to our pets lecture

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strufe @strufe.bsky.social · 03/06/2026

This week, our Abhi is at AsiaCCS where he'll present the paper he wrote at Inria with Mathieu and Héber, tomorrow. They show that current approaches to anonymization of trajectories fail utterly when faced by strategic adversaries. Don't miss out if you're in Bangalore, it's impressive work!

Title page of the paper by Abhishek Mishra, Mathieu Cunche, and Héber H. Arcolezi

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strufe @strufe.bsky.social · 21/05/2026

🇪🇸 With flying colors! 🇩🇪 No one knowing Patricia doubted this outcome - but it's still a special moment to see students become colleagues, graduating with distinction! Her work on DP covers foundations to real-world impact, presented everywhere from top scientific venues to science slam competitions!

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strufe @strufe.bsky.social · 04/05/2026

Highest performance, not only at academic tasks 🥸 Our Privacy group finishers (save Islam, our highest performer who went missing after) of Badische Meile! While @kit.edu sent the most runners in total the @kastel-labs.bsky.social was clearly the largest KIT institute (20 speedy scientists!) 😎

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strufe @strufe.bsky.social · 17/04/2026

PET-CON 2026.1 kicked off with great discussions & talks on privacy-from Tor extensions to confidential computing & data access-at KASTEL/KIT. Looking forward to two days of exchange. Thanks to our Patri, Alex & team for organizing, and participants for the contributions, energy and insights!

Presentation of Muhammad Usama Sardar on formal analysis of attested TLS at PET-CON 2026.1 at KIT Karlsruhe/KASTEL Security Research Labs.

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strufe @strufe.bsky.social · 25/03/2026

Closing panel at the final public event of #ForDaySec, with @ewo.name, Thomas Riehm, Tatjana Halm, Dieter Gollmann, Sabine Ellerhold, and Dominik Hermann. Great panel, but pessimistic statements (both humans "fail" and systems are fundamentally insecure =-o). Hoping for some positive outlook! ;-)

Panel at the final event of the ForDaySec project on security of everyday it, with Eva Wolfangel, Thomas Riehm, Tatjana Halm, Dieter Gollmann, Sabine Ellerhold, moderated by Dominik Herrmann

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strufe @strufe.bsky.social · 19/03/2026

Congrats to Patricia 🎉 Her paper “Understanding Disclosure Risk in Differential Privacy” was accepted to top-tier VLDB! Introducing reconstruction advantage, unifying disclosure risk across different attacks and providing tight bounds from DP noise to attacker power! arxiv.org/abs/2603.12142

Title page of Patricia's VLDB paper on Reconstruction Advantage in DP

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strufe @strufe.bsky.social · 17/03/2026

Islam's first SoK paper “Multi‑Perspective Video Anonymization” was just accepted at PETS 2026, the top venue for privacy tech in Calgary 🎉. Huge kudos for mapping out where video anonymization stands today--and what’s still missing for real multi‑camera setups. @kastel-labs.bsky.social at work 😎

Title page of Islam's first accepted paper, the systemitization of knowledge on multi perspective video anonymization.

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strufe @strufe.bsky.social · 12/03/2026

It's been great presenting our work on Wi-Fi privacy attacks at the legendary Privacy Alpine Seminar ("Privaski"), organized by the stellar privatics team of @fondation-inria.bsky.social with a great lineup! Thanks for the invitation, it was amazing, as always! team.inria.fr/privatics/pr...

Person next to a screen showing "BFId: Identity Inference Attacks Utilizing Beamforming Feedback Information"

https://dl.acm.org/doi/10.1145/3719027.3765062

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strufe @strufe.bsky.social · 05/02/2026

Annika Sauer wins the excellence award of Université franco-allemande/Deutsch-Französische Hochschule, for the best graduate. Annika did her Master's with us on Attack Resilience in Differential Privacy, co-supervised by Héber Hwang Arcolezi and our Patricia at KIT and UGA/INP. Congrats, great work!

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strufe @strufe.bsky.social · 27/01/2026

💥The year starts with great news:💥 🍾Àlex' paper accepted at USENIX Sec🎉 He demonstrates how suppression (and: sampling as one special case) may amplify privacy but yields disproportionate utility loss. It's been hard work: 🚀per aspera ad astra🌟 Congrats, we're proud! arxiv.org/abs/2601.05180

Screenshot of the title page of Alex' paper - "The Adverse Effects of Omitting Records in Differential Privacy: How Sampling and Suppression Degrade the Privacy–Utility Tradeoff"

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strufe @strufe.bsky.social · 22/01/2026

We had the great pleasure of hosting Prof. Damiano Carra who gave a very interesting and entertaining talk on "Caching as an Online Learning Problem" - with everything from smart caches over adversarial traffic to NP hard problems. Thanks a lot for visiting and the great talk!

Prof. Damiano Carra giving a talk in a lecture hall

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strufe @strufe.bsky.social · 20/01/2026

In a world's first, Germany's Dobrindt shows a spine and apparently has US military personnel arrested at Ramstein Air Force Base for their prime leader's repeatedly breaking international law. /s

Fake of German cops arresting us army personnel in front of Ramstein Air Force Base.

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strufe @strufe.bsky.social · 20/01/2026

🥂 It's with great pleasure that we can announce, that Dr. Simon Hanisch has successfully defended his PhD thesis, "Building and Evaluating Anonymizations for Human Motions"! 👏

Simon wearing his doctor's hat after his PhD defense.

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strufe @strufe.bsky.social · 06/11/2025

Mobility data symposium at TRIANGEL in full swing - discussing the use of mobility data and their privacy challengeswith the Karlsruhe public, great experience! :) @kit.edu @kastel-labs.bsky.social

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strufe @strufe.bsky.social · 05/11/2025

We are lucky to be visited by @gianlucastringhini.com who gave an insightful talk about research on online safety as part of our @kastel-labs.bsky.social distinguished lecture series: dls.kastel.kit.edu today - Thanks a lot!

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strufe @strufe.bsky.social · 15/10/2025

Very unusual but probably the best conference keynote we ever had the pleasure of attending: David Basin explaining how security and privacy by design may actually work with the help of formal logic.

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strufe @strufe.bsky.social · 13/10/2025

🎉 Happy to share that Julian presents our paper showing how beamforming feedback information - openly broadcast by WiFi devices and accessible to any passive network sniffer - can identify individuals with near-perfect accuracy, even those who don't carry any devices, at ACM CCS in Taipei this week!

Title of our paper at CCS 2025, demonstrating an attack using beamforming feedback information to identify individuals walking through a WLAN

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strufe @strufe.bsky.social · 20/09/2025

Can't be correct, is it!?

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strufe @strufe.bsky.social · 12/06/2025

From gait and gaze to WiFi signals and XR avatars-our bodies reveal far more than we think. I shared empirical results showing how easy it is to re-identify individuals in so-called “anonymized” datasets, even when advanced techniques like federated learning or differential privacy are applied.

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strufe @strufe.bsky.social · 12/06/2025

I had the pleasure of giving a keynote APVP '25 in Poitiers yesterday on a topic that’s becoming increasingly urgent: the (non-existing) privacy of behavioral biometrics.

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strufe @strufe.bsky.social · 03/06/2025

One of our @kastel-labs.bsky.social projects explained: How smart city sensors infringe on your privacy, featuring our Julian, Patricia (and Felix behind the scenes), as well as your's truly as a train wreck (after a 4h sleep night due to having been on a train wreck the night before 😅)

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strufe @strufe.bsky.social · 28/05/2025

And it keeps getting better, is today April 1st and I missed that!?

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strufe @strufe.bsky.social · 28/05/2025

Haha! "It's scientifically correct if it supports my political point of view!!1!1" We used to look up to the US, but now we're rather happy to not also live through another period of the dark ages..

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strufe @strufe.bsky.social · 26/05/2025

Back from CPDP and our stellar panel on Privacy Threats of Medical Data, with Franziska Boehm, Dominique Schroeder, Kim Wuyts, and Isabel Wagner. I've learned a lot from the panels and I'm grateful for the invitation from the organizers of the CS Track, Marit Hansen and @xotoxot.bsky.social!

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strufe @strufe.bsky.social · 17/05/2025

Campus day 2025 at #KITKarlsruhe, and our expositions of Matin and Julian have attracted lots of interest and raised controversial discussions. Needless to say that we had a blast! 🎉

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strufe @strufe.bsky.social · 14/05/2025

Frightening the hell out of 90% of science globally in one simple step (I hope the orange clown won't learn about this, or we'll have to host our own ShareLatex, again =-o)

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strufe @strufe.bsky.social · 14/05/2025

Radar, used e.g. in vehicles, is claimed to "preserve privacy". In her thesis Cinthya investigated this claim during her ERASMUS stay with us. Turns out several attributes (age, sex, etc) can be reliably inferred. Congrats and thanks for the great work! ieeexplore.ieee.org/document/109...

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strufe @strufe.bsky.social · 04/05/2025

I participated in the Wings for Life World Run, and it actually went better than I had anticipated :) It's Red Bull advertisement, but all donations go to spinal cord research, so I guess it's ok :)

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strufe @strufe.bsky.social · 23/04/2025

Forward from another network h/t: Arjan Kuijper

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strufe @strufe.bsky.social · 22/04/2025

Fresh off the press: Simon's survey on different attempts to anonymize behavioural biometric data has been accepted at ACM Computing Surveys! 💪 Excellent work, congrats! 💪 It's gold open access, you can find it here: dl.acm.org/doi/10.1145/... KASTEL Security Research Labs and CeTI hard at work

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strufe @strufe.bsky.social · 29/03/2025

🤔 wondering if this is fine with GDPR - and all our European public institutions as well as law enforcement/intelligence agencies using Windows... 🤔 infosec.exchange/@wdormann/11...

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strufe @strufe.bsky.social · 18/03/2025

Worry less, do more - we're well situated in Europe, the digital transformation is far from over and markets are still young is probably the shortest possible summary of Michael's interesting keynote this morning. #itskonf25

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strufe @strufe.bsky.social · 18/03/2025

Claudia Plattner, Head of BSI, gives an engaging talk motivating the importance of IT security, and then skips the two highest ranked questions in the FAQ on the way (honi soit qui mal y pense) :) #itskonf25

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strufe @strufe.bsky.social · 18/03/2025

Day 1, intro by Dr Huthmacher of BMBF. Democracy and defending it moving up to be one of the prime objectives of IT security. www.forschung-it-sicherheit-kommunikationssysteme.de/nationale-ko...

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strufe @strufe.bsky.social · 04/03/2025

Keep in mind that for many great North American products we have a Canadian version on European shelves. Support democracy, support the free world, buy Canadian.

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strufe @strufe.bsky.social · 02/03/2025

💪"Men vi har et moralsk kompass."💪 (No fuel for the US naval forces in Norway, until the bullying and extortion by their current "king"^h^h government stops) 🙏 Good example for others to follow!

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strufe @strufe.bsky.social · 25/02/2025

Our Matin Fallahi and Patricia Arias Cabarcos did it again - we've got our paper on novel authentication mechanisms, especially in the context of AR/VR accepted at the CHI Late Breaking Work track. 💪 Very cool, congratulations! 😎

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strufe @strufe.bsky.social · 20/02/2025

netzpolitik.org/2025/kunstfr...

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strufe @strufe.bsky.social · 20/02/2025

Putin bekommt, wofür er bezahlt. Hoffentlich nicht Sonntag auch bei uns.

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strufe @strufe.bsky.social · 14/02/2025

Last Friday of the winter term, last lectures, and the evaluation results just came in. I really enjoy my Master's lectures - and the students apparently share that feeling. I think I'll go home for the weekend and cry a little out of emotion. Have a nice weekend, too, you all!

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