GreHack

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!

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/conference-gre…

cc @pagedout_zine

✨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 😄

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=… youtu.be/X-ZJH4d2tuE?t=…

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.

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.

🎉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 🏆

Quarkslab is sponsoring @GrehackConf 2025! @rayanlecat is proposing an Active Directory Pwning workshop and our team #qsec will also be there for the CTF. Come & say hi!

We are pleased to welcome @rootme_org , @OteriaCS , @AconitGre , Grenoble Hackerspace, BitBox, and @Securimag_ this year. Thank you for coming. 💚

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!

We're livestreaming the event. In fact, both the venue and I are doing so. Their volume is a little louder, because they're actively monitoring it.

🎤 Ce vendredi 28 novembre @Defte_ , pentester chez Orange Cyberdefense, présentera sa conférence : “Channel Binding with MSSQL: A Deep Dive into TDS, NTLM & STARTTLS Madness” 📅 @GrehackConf : 28-29 novembre 2025 📍 Grenoble Programme 👉 ow.ly/C66N50XyKFk

The show must go live ! The live will start at 8:45 AM, get ready ! 🤩 🎥Stream Cooper: youtube.com/live/X-ZJH4d2t… 🎞️Stream Minatec: youtube.com/live/F4CudbWHZ…

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Thank you for the shout-out! I’m really glad to support this great conference as a sponsor. It’s a pleasure to be part of an event that brings together so many passionate and talented people in the security community. Always happy to support meaningful and impactful knowledge sharing.

GreHack is this Friday & Saturday! Friday: Talks all day + workshops 6–9pm. At the same time, join our Evening Social & Apéro . Everyone’s welcome, drop by anytime or come after your workshop to meet attendees, chat, and relax. Saturday: CTF , 8-hour competition for all levels

We will be in Grenoble for @GrehackConf ! Come talk to us! 🌨️⛷️

See you on 28 & 29th nov. at @GrehackConf !