Dimitri Kokkonis

@plumtrie
18 Followers
49 Following
30 Posts
PhD student in cybersecurity.
Personal sitehttps://kokkonisd.github.io/

RE: https://chaosfem.tw/@Athena/116579221010443932

it feels like we as an industry need to have a think about why we even bother to make anything. stuff like memory safety and correctness only matter because of the effects that software has *on people*. if we decide we don't care about those effects when it suits us then what are we doing here

This weekend I wrote about a fun embedded CTF challenge: https://kokkonisd.github.io/2026/02/22/hackropole-extension-writeup
Return to the embedded world: reversing ESP32 firmware

Reversing a piece of ESP32 firmware for a CTF challenge.

in 2017 a popular twitter game was to type a partial phrase then see what your phone auto-completes it with.

this proved so popular that it is now the only business model in the US.

Yesterday at #FOSDEM @raboof and I presented Lila, our tool allowing to distribute the workload of verifying reproducibility of Nix packages among several verifiers (see https://reproducibility.nixos.social).

If you want to see a recording of our talk, it is available here: https://fosdem.org/2026/schedule/event/HGC788-lila_decentralized_reproducible-builds_verification_for_the_nixos_ecosystem/

We have also written an academic paper about it!
-> https://arxiv.org/abs/2601.20662

Lila - Nix Reproducibility Tracker

The video of the talk is now available here: https://video.fosdem.org/2026/ub5132/BHNWLN-rosa-backdoor-detector.av1.webm

Check it out if you're in #security and/or #fuzzing. I guarantee it will be worth your time and you'll have fun too!

WOW! Full #security devroom at #FOSDEM, for the presentation of "ROSA: finding #backdoors with #fuzzing" by my fellow co-authors @plumtrie and M. Marcozzi.

More about this work in the full paper at https://arxiv.org/abs/2505.08544 (#openaccess, of course)

On my way to #fosdem #fosdem26 to present our recent work on detecting backdoors with fuzzing!

Come to our talks:
- Sat 31/01, 15:00, room UB5.132 (https://fosdem.org/2026/schedule/event/BHNWLN-rosa-backdoor-detector/)
- Sun 01/02, 14:35, room H.2213 (https://fosdem.org/2026/schedule/event/BYACG8-automatic-backdoor-detection-in-ci/)

See you there :)

FOSDEM 2026 - Finding backdoors with fuzzing

Got angry, posted about academic fuzzing research status quo again: https://addisoncrump.info/research/what-the-hell-are-we-doing/
What the hell are we doing? · Addison Crump

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