Jeremy Fetiveau

I was supposed to present @InfiltrateCon on attacking chrome today. I may publish a post soon before the actual, complete talk in October. Meanwhile, you guys can check out my @doar_e articles as well as my @typhooncon talk 🙃 doar-e.github.io/tag/v8.html doar-e.github.io/pages/presenta…

Après 4 ans d'absence, BeeRumP revient ! 🍻 Le concept : des rumps (~10min) et de la bière à volonté, l'occasion de présenter des projets perso avec humour ! La soirée aura lieu dans les locaux d'Epita à Paris, le vendredi 19 juin. Envoyez vos rumps à contact@rump.beer :)

Blog post: On the Coming Industrialisation of Exploit Generation with LLMs sean.heelan.io/2026/01/18/on-… TL;DR: I ran an experiment with GPT-5.2 and Opus 4.5 based agents to generate exploits for a zeroday QuickJS bug. They're pretty good at it. Code: github.com/SeanHeelan/ana…

Last week was my first time in Barcelona for #OffensiveBCN . This first edition was a real blast ! We were many people from @RandoriSec, it's always great to catch friends and meet new one. Thanks to @epsilon_sec and all the speakers.

@POC_Crew @epsilon_sec Thank you so much for coming all the way! Was an honor to have you in town 😁

We are heading back to Korea with wonderful memories from Barcelona. We would like to thank @__x86 💙 @epsilon_sec for giving us such great time. #OffensiveBCN

Huge props to @__x86 & @epsilon_sec for a cool first edition of OffensiveBCN meetup. So much talent, great energy and French pastries 🥐 Hope this will be the first of many - happy @prdgmshift & other friends supported it

@f_roncari @epsilon_sec @prdgmshift Thank you Filippo! So many calories :P And thanks for the support ! ☺️

@0xShad3 @epsilon_sec @nikoschalk @census_labs Thanks for coming and for the great talk!! ☺️

Mad respect to @__x86 and the rest of @epsilon_sec for organising OffensiveBCN , it was a blast. We hope it’ll become an annual need-to-know thing. @nikoschalk @census_labs

@pwnlambda @npupyshev @0x41con @xerub @justandrijana Thanks for coming and helping! 😁

@npupyshev @0x41con Thanks to @__x86, @xerub and @justandrijana for organising these amazing conferences :)

A bit late, but I’ve finally uploaded the slides for the talk I did together with @npupyshev on Apple’s C1 at @0x41con 2025 as well as the slides from my talk at (In)Offensive BCN about my attempts at training specialist LLMs for vulnerability research: github.com/pwnlambda/talk…

@tsvika_m @RRLabs32 Thank you so much guys! And thanks for the support and the great talk from Kaufi! 🥰

Wrapped up an incredible week in Barcelona and had an amazing time 🤩 So many old and new friends, countless events, and perfect weather. First, hats off to @__x86 for the idea, execution, and outstanding hospitality at #BCNoffensive. Huge shout-out to our (@RRLabs32) Kaufi for his incredible talk 💪🏻, and to all the other speakers who made the event so special. Thank you to the event supporters, you are the foundation of every successful event. Last but not least, a big thank you to all the friends who joined and took part in our small party on Tuesday evening (aka MESIBArca). It wouldn’t have been the same without you, and it was absolutely insane because of you all.

Last month, I gave a talk at @POC_Crew about ATLANTIS and the tech behind our #AIxCC win. We dove into competition details, using LLMs for deep bug discovery, and what's next for AI in security. github.com/pr0cf5/talks/b…

We derestricted a number of vulnerabilities found by Big Sleep in JavaScriptCore today: issuetracker.google.com/issues?q=compo… All of them were fixed in the iOS 26.1 (and equivalent) update last month. Definitely some cool bugs in there!

If you missed HEXACON 2025 or want to rewatch some of the talks, they’re now available on our YouTube channel 📽️ Enjoy the content, and see you in 2026! youtube.com/playlist?list=…

Epsilon cherche des profils R&D! En présentiel à Paris ou Barcelone. N'hésitez pas à nous contacter pour venir prendre un café et discuter des opportunités.

We derestricted crbug.com/382005099 today which might just be my favorite bug of the last few years: bad interaction between WebAudio changing the CPU's handling of floats and V8 not expecting that. See #comment19" target="_blank" rel="nofollow noopener">crbug.com/382005099#comm… for a PoC exploit. Also affected other browsers

[POC2025] - Full Speaker Lineup Revealed! 🔥 We’re thrilled to unveil the incredible minds shaping this year’s 20th anniversary stage. #POC2025

If you are looking out for some "intimacy", you can visit Epsilon booth. @__x86 @hexacon_fr