GreHack is a hacking & scientific infosec conference in Grenoble, France. Nov. 28 & 29, 2025
Joined June 2015
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Pinned Tweet
28 Nov 2025
It's D-Day! 🔥
The first day of the GreHack conference is already well underway! Today, we are welcoming nearly 500 participants to the beautiful mountains of Grenoble. 🏔️
Participants, feel free to stop by the various stands to chat with them during the breaks!
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Apr 5
Guess who’s back 👀
Missed us? Because we definitely missed you !
If you’re already looking forward to the next #GreHack, we’ve got something for you.
Starting today, we’ll be dropping talks from last November’s edition, one video at a time 🎤
Let’s relive it together 🔥
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May 10
🎤 First #GreHack25 Rumps recap !
• @biero_el “Setup And Tune An OT SOC”
🎥 youtube.com/watch?v=g0jbECO2…
• @biero_el “Reading Serbian In JS At 3am”
🎥 youtube.com/watch?v=AzDHxVTs…
• @klcium “I DT_NEEDED Help! How Not To Inject A Dependency”
🎥 youtube.com/watch?v=TkicF9Bs…
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May 13
🎤 Final #GreHack25 Rumps recap 🙌
• Argit Janaqi “How Private Is VeraCrypt Activity (On Windows)”
youtube.com/watch?v=O9CNRLBb…
• Lucas Parsy (Tuxlu) “Grenoble Hackerspace”
youtube.com/watch?v=Hfl3qU5J…
• @Ruulian_ “How I Seduced My Girlfriend Using The FCSC”
youtube.com/watch?v=8N03vFVP…
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GreHack retweeted
15 Dec 2025
Once again, RandoriSec sponsored @GrehackConf and several RandoriSec consultants attended the conference.
This blog post goes over a few of our favourite talks.
blog.randorisec.fr/conferenc…
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3 Dec 2025
✨A quick look back at something special from #GreHack25
Paged Out! was in this year’s goodies, a free, one-article-per-page publication covering programming, security and more. Fast to read, fun to explore, packed with content!
Check them out here : pagedout.institute/ 😄
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GreHack retweeted
30 Nov 2025
You can write '2' (0x32) anywhere in the filesystem of a Linux-based network switch. How do you get root?
That's basically what my talk at @GrehackConf was about - enjoy!
youtu.be/F4CudbWHZ7Y?t=504 youtu.be/X-ZJH4d2tuE?t=1162
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1 Dec 2025
🎉The #GreHack25 CTF has come to a close!
We hope everyone enjoyed the challenges and had a great time testing their skills. Huge congratulations to all participants for diving in, and a special shout-out to the top 4 teams for their performance! We hope you enjoy the prizes 🏆
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1 Dec 2025
A big thank you to the organizers for making the event possible, and to CTFer.io for supporting the infrastructure alongside the GreHack team. A few hiccups came up during the event, and a detailed recap will be published soon to explain what happened.
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1 Dec 2025
Thanks to everyone for making the CTF such an enjoyable experience! Please remember to keep the spirit of respect towards others at all events, this helps everyone have a great time.
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