Leon Derczynski's Avatar

Leon Derczynski

@leonderczynski.bsky.social

LLM Security at NVIDIA Prof in CS/NLP at IT University of Copenhagen garak guy, garak.ai "berømt skikkelse" "like a gazelle" Copenhagen/Seattle

690 Followers  |  367 Following  |  168 Posts  |  Joined: 20.11.2024  |  2.0155

Latest posts by leonderczynski.bsky.social on Bluesky

huh, Harry Kim getting beaten up by Lyta Alexander was not on my background TV bingo card for today, but here we are

18.11.2025 13:16 — 👍 2    🔁 0    💬 0    📌 0

surprised (and grateful) I somehow still remembered on the first try the arcane incantation for quitting a telnet session. vi has nothing on this imo. muscle memory is weird

16.11.2025 19:58 — 👍 2    🔁 0    💬 0    📌 0

getting on arXiv isn't "being published"

03.11.2025 05:54 — 👍 0    🔁 0    💬 1    📌 0

come in, it definitely won't, arXiv is still the open door/no bar venue

03.11.2025 05:54 — 👍 1    🔁 0    💬 1    📌 0

😂 arXiv is cute when it pretends to have standards!

03.11.2025 05:53 — 👍 3    🔁 0    💬 0    📌 0

what thing

08.08.2025 04:37 — 👍 2    🔁 0    💬 1    📌 0
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Come to LLMSEC at ACL & hear Niloofar's keynote

"What does it mean for agentic AI to preserve privacy?" - Niloofar Mireshghallah, Meta/CMU

(Friday 1st Aug, 11.00; Austria Center Vienna Hall B)

See you there!

#acl2025 #acl2025nlp

28.07.2025 15:19 — 👍 11    🔁 2    💬 1    📌 0

the "oyster tower" bit was great. brutal

24.07.2025 09:28 — 👍 1    🔁 0    💬 1    📌 0

Or he's pushing a product into which x sunk significant capex?

11.07.2025 06:36 — 👍 0    🔁 0    💬 0    📌 0
have the courage to use your own intelligence

have the courage to use your own intelligence

logging on

10.07.2025 11:34 — 👍 154    🔁 29    💬 1    📌 1

Brazen of them. Sounds extremely awkward for you, I'm sorry. What would they have done with unaltered slides? Cancelled and left a gap in their schedule for no doubt paying participants?

08.07.2025 12:44 — 👍 4    🔁 0    💬 0    📌 0
Preview
Release v0.12.0 · NVIDIA/garak What's Changed New plugins Add audio NIM model and audio probes by @erickgalinkin in #1163 Leakreplay refactor by @dchiitmalla in #1264 probes: refactor fact snippet mixin by @leondz in #1187 New...

new garak, llm vuln scanner rls (v0.12.0)

* Audio attacks, for multimodal models
* More training data membership inference attacks
* Multilingual attacks can now also use GCP
* Detailed eval summary in one JSONL row/object

+more :)

details: github.com/NVIDIA/garak...

02.07.2025 15:32 — 👍 0    🔁 0    💬 0    📌 0

the dying but clinging on battery in the bathroom's Frozen-branded soap dispenser reminds me that it's only 4-5 months til Bublé & Let It Go season. aren't you looking forward

27.06.2025 05:01 — 👍 2    🔁 0    💬 0    📌 0

why do academics send and expect so much weekend email and work. not healthy

22.06.2025 06:10 — 👍 1    🔁 0    💬 0    📌 0

It's been 2.5 years but ANY SECOND NOW, right?

20.06.2025 12:41 — 👍 0    🔁 0    💬 0    📌 0

data indicates students don't like using it, sorry

19.06.2025 16:16 — 👍 0    🔁 0    💬 1    📌 0

computer scientists encountering the concept of "desirable difficulty"

19.06.2025 16:15 — 👍 0    🔁 0    💬 0    📌 0

remembering the time i checked in to my reasonably classy russian business hotel late with my wife, and the staff said "sir, this... girl.. not allowed"

she's a serious professor

we went through to the room, opened the balcony door, and buried a bottle of champagne in the metre of snow

good times

18.06.2025 06:56 — 👍 1    🔁 0    💬 0    📌 0
Login • Instagram Welcome back to Instagram. Sign in to check out what your friends, family & interests have been capturing & sharing around the world.

@jjvincent.bsky.social woah ur really famous! love this attack also. I automate and run it for a living

www.instagram.com/reel/DKz9ezj...

14.06.2025 06:06 — 👍 2    🔁 0    💬 0    📌 0

Michael... OK...

14.06.2025 05:01 — 👍 0    🔁 0    💬 0    📌 0

Great to see our work uncovering dangerous issues in commercial LLM "therapists" getting some coverage: futurism.com/stanford-the...

14.06.2025 04:01 — 👍 2    🔁 1    💬 0    📌 0

I have not updated since Christmas, I see. Guess I'd better put on some summer Bublé

09.06.2025 06:04 — 👍 1    🔁 0    💬 0    📌 0
The Internet Used to Be a Place
YouTube video by Sarah Davis Baker The Internet Used to Be a Place

www.youtube.com/watch?v=oYlc...

08.06.2025 10:11 — 👍 2    🔁 0    💬 1    📌 0

"natwirkung"

"wirk smorter nat horder"

accents dreamed up by the utterly deranged

(what is going on with that 🇺🇸 vowel sheft)

08.06.2025 10:05 — 👍 0    🔁 0    💬 0    📌 0

what is this photoshoot
delete this omg

05.06.2025 05:26 — 👍 1    🔁 0    💬 0    📌 0

i need you to understand that "alternate uses" is a terrible test/definition of creativity and has been for some time. it's extremely narrow, very shallow, and misses almost everything we know about creativity

03.06.2025 05:09 — 👍 0    🔁 0    💬 0    📌 0

i had a father in law once who did a talk like this called "Looking up Orion's skirt"

02.06.2025 17:39 — 👍 1    🔁 0    💬 0    📌 0
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3² + 4² = 5² ? big if true

21.05.2025 10:24 — 👍 1    🔁 0    💬 0    📌 0

ARE YOU SAYING IT'S A CON

15.05.2025 20:39 — 👍 1    🔁 0    💬 1    📌 0

if overleaf being down slows "ai progress", i'm not sure "ai progress" is particularly well defined

15.05.2025 05:17 — 👍 7    🔁 0    💬 1    📌 0

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