GreHack @GrehackConf
GreHack is a hacking & scientific infosec conference in Grenoble, France. Nov. 28 & 29, 2025 grehack.fr Grenoble, France Joined June 2015-
Tweets883
-
Followers5K
-
Following1K
-
Likes580
Details & submission at: cfp.grehack.fr/grehack-2026/c…
Grehack CFP open! 📜 #GreHack is coming back November 13-14 in Grenoble, now's your time to propose a talk or workshop about your new research, the cool tool you created, surprising vulns findings and your insightful cybersec experience! Call for Paper is open starting... Now!
🎤 Final #GreHack25 Rumps recap 🙌 • Argit Janaqi “How Private Is VeraCrypt Activity (On Windows)” youtube.com/watch?v=O9CNRL… • Lucas Parsy (Tuxlu) “Grenoble Hackerspace” youtube.com/watch?v=Hfl3qU… • @Ruulian_ “How I Seduced My Girlfriend Using The FCSC” youtube.com/watch?v=8N03vF…
🎤 First #GreHack25 Rumps recap ! • @biero_el “Setup And Tune An OT SOC” 🎥 youtube.com/watch?v=g0jbEC… • @biero_el “Reading Serbian In JS At 3am” 🎥 youtube.com/watch?v=AzDHxV… • @klcium “I DT_NEEDED Help! How Not To Inject A Dependency” 🎥 youtube.com/watch?v=TkicF9…
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 🔥
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…
✨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 🏆
Synacktiv @Synacktiv
21K Followers 274 Following Offensive security company. Dojo of many ninjas. Red teaming, reverse engineering, vuln research, dev of security tools and incident response.
Charlie Bromberg « ... @_nwodtuhs
16K Followers 663 Following Trying to hack the way we hack things 🏴☠️
Rémi GASCOU (Podalir... @podalirius_
8K Followers 714 Following Senior Security Researcher @SpecterOps | 3xMicrosoft Security MVP | Creator of opensource security tools 🎬 https://t.co/QaAENc4NcY | Views are my own
Hash Miser @H_Miser
9K Followers 1K Following Internet janitor, #CERT #BlueTeam and Whisk(e)y enthusiast "Everything you do is useless ! Enjoy 🍻" [email protected] https://t.co/pBOfukJZJi
mpgn @mpgn_x64
18K Followers 236 Following Flibustier du net ̿ ̿̿'̿'\̵͇̿̿\=(•̪●)=/̵͇̿̿/'̿̿ ̿ ̿ ̿ Podcast Hack'n Speak @hacknspeak / https://t.co/GyACSFg9mw
Laluka@OffenSkill @TheLaluka
6K Followers 1K Following Sharing is Caring, Hacker, Eternel Learner, Cat! =^~^=
Swissky @pentest_swissky
22K Followers 1K Following RedTeam | Pentest Author of PayloadsAllTheThings & SSRFmap https://t.co/w1ZLRqoafG
Kévin GERVOT (Mizu) @kevin_mizu
7K Followers 784 Following Vulnerabilty researcher at @assetnote 🐛 | DOMLogger++ developer 👨🏻💻 | CTF with @FlatNetworkOrg, @rhackgondins 🦦 | @ECSC_TeamFrance 2023 🇫🇷
Root-Me @rootme_org
20K Followers 475 Following Root Me allows everyone to test and improve their knowledge in computer security and hacking. Legal. Free. Realistic. Discord: https://t.co/G6y1wDrdOn
ph0wn @ph0wn
948 Followers 77 Following smart devices CTF, 24-25 novembre 2023 Mastodon: @[email protected]
Ange @angealbertini
25K Followers 916 Following Reverse engineer, file formats expert. Corkami, CPS2Shock, PoC||GTFO, Sha1tered, Magika... Security engineer @ Google. He/him.
Thomas Roccia 🤘 @fr0gger_
35K Followers 2K Following AI Security x Threat Intel · Threat Researcher · Creator of #Unprotect & #NOVA · Malware Warlock · Python 🧡 · Prev @Microsoft @McAfee_Labs
Axelle Ap. @cryptax @... @cryptax
6K Followers 288 Following Mainly about security, OS, mobile phones. The postings on this page are solely my own opinion and do not represent my employer.
Nishacid @Nishacid
2K Followers 257 Following Cybersecurity enthusiast | Bug Hunter 🪲| Staff @rootme_org | @GrehackConf 🏔️ | CTF @RMUBYGG 🇫🇷
☠ Bluetouff @bluetouff
38K Followers 4K Following Building things while breaking stuff - https://t.co/5DMckSyIyk - https://t.co/78DxaERiR5
voydstack @voydstack
2K Followers 1K Following VR @Synacktiv | CTF with @RMUBYGG, @Hexagonctf, @ECSC_TeamFrance 20/21/22/23/24
Worty @_Worty
3K Followers 574 Following Organizer of @HeroCTF || ctf w/ @FlatNetworkOrg || TeamFR 2021, 2022 & 2025 🇫🇷 || Breaking stuff @ Depi
Charles Fol @cfreal_
4K Followers 709 Following @Synacktiv – previously @ambionics @LexfoSecurite – blogs: https://t.co/cLoNdCGPU7 https://t.co/JVMLjUzTJU https://t.co/t9a5IcOXSU
🥝🏳️🌈 Be... @gentilkiwi
62K Followers 291 Following A kiwi coding mimikatz & kekeo github: https://t.co/eS3LVgU6i0 Head of security services @banquedefrance Tweets are my own and not the views of my employer
Rayna ¯\_(ツ)_/¯ �... @MaliciaRogue
13K Followers 3K Following Strategy & Foresight. Award-winning writer. Former🧬scientist. Uncertainty mgmt #Infosec #EU #FLOSS Ambassador @DigitalEU ❤️🚆 #Polylingual I contain multitudes
Lucky Ashley @Ashley2001820
1 Followers 163 Following
668𖤐 @sigilmaker
153 Followers 778 Following Military Anthropologist, Real Cybernetic Ontologies. Gotham Sec Dev. Golem maker at night in the ether.
Sanad @ManiacLogic0x1
2 Followers 230 Following Cyber Security & Systems Developer. Focused on blue teaming, digital forensics, and SOC architecture. Organizing the Libyan Sentinel Challenge
Bigflow94zoo @bigflow94zoo
4 Followers 224 Following
Guillaume X @GuGus____
5 Followers 501 Following
achillle @achillllllllle
1 Followers 50 Following
siyam @siyam924512
394 Followers 6K Following
Clémentine @clems_b
10 Followers 185 Following
DevHunter_Sec 🔍 @dronefolie
9 Followers 221 Following 🛡️ Security Researcher | Bug Bounty Hunter @YesWeHack & @Hacker0x01 💻 Senior Dev mindset | Breaking logic for fun & profit 🔍 Deep diving into API Security &
PRODPRESS ET MEDIAS-L... @gjpresse
1K Followers 5K Following PRODPRESS™ Média indépendant d’investigation Enquêtes – analyses – information d’intérêt public 🌍 Europe | International 🔗 https://t.co/OkxhFMjG9c
Scørpīøň Dēltā @_Delta_54
31 Followers 308 Following
derthad @derthadb
4 Followers 45 Following
𝓒ă𝐭ă𝐥𝐢�... @s3nd34h
11 Followers 632 Following
Leverage 12 @12Leverage
44 Followers 3K Following
Albert pwn 🏴☠... @Shad0w4sec
4 Followers 459 Following
Maurice LAMBERT @LmbrtMaurice
1 Followers 28 Following
David GOISET @DavidGoiset
3 Followers 94 Following
Babbz @Babbzito
0 Followers 50 Following
gk98 @98erKAG
41 Followers 2K Following
PouleOppo @PouleOppo
0 Followers 14 Following
excidius @excidius_
3 Followers 115 Following
Abdullah Hussein @abd50080
2 Followers 146 Following
Tony Stark in my spar... @TKiddie46140
1 Followers 783 Following {"name":"0_Trù$t", "description":"vulnerability researcher", "goal":"try to do some cool stuff and share it","philosophy":"no inputs, no problems"}
Y @890HBK
3 Followers 277 Following
amir amir @amirami88385425
9 Followers 534 Following
Harley Kimball @infinitelogins
7K Followers 1K Following Researcher Strategy & Live Hacking @ HackerOne | Community Cultivator | Bug Bounty Hunter | Co-Founder of @BugBountyDEFCON | Founder of Disclosed Newsletter.
Ashif Iqubal @Ashif1337
83 Followers 953 Following Security Engineer | OSWE | eWPTX | OSEP | CRTO | OSCP | OSWP | CTF Learner | YouTube “Security Journey With Ashif”
MouhannadlrX🗡️�... @MouhannadlrX0
534 Followers 2K Following @HackenProof Security Researcher , in love with diving deep and chains issues toghether to achive most impact possible , CVE-2022-36178
zupereight. @pill372343
0 Followers 88 Following
Mehdi Khenissi @mehdikhen
5 Followers 181 Following
Alfonso De Gregorio (... @secYOUre
391 Followers 267 Following Critical thinker and hacker. The politics of cybersecurity is my field. Unanticipated state space is my ranch–let's align the incentives to make it smaller!
PoiuLkjh @PoiuLkj97148459
32 Followers 3K Following
KorexBrown @BrownKorex75338
8 Followers 343 Following
Francesco Di Viesto @Frank_Di_Viesto
5 Followers 898 Following
Synacktiv @Synacktiv
21K Followers 274 Following Offensive security company. Dojo of many ninjas. Red teaming, reverse engineering, vuln research, dev of security tools and incident response.
Florian Roth ⚡️ @cyb3rops
221K Followers 3K Following Head of Research @nextronsystems #DFIR #YARA #Sigma | detection engineer | creator of @thor_scanner, Aurora, Sigma, LOKI, YARA-Forge | always busy ⌚️🐇 | vi/vim
Hash Miser @H_Miser
9K Followers 1K Following Internet janitor, #CERT #BlueTeam and Whisk(e)y enthusiast "Everything you do is useless ! Enjoy 🍻" [email protected] https://t.co/pBOfukJZJi
mpgn @mpgn_x64
18K Followers 236 Following Flibustier du net ̿ ̿̿'̿'\̵͇̿̿\=(•̪●)=/̵͇̿̿/'̿̿ ̿ ̿ ̿ Podcast Hack'n Speak @hacknspeak / https://t.co/GyACSFg9mw
Mathis Hammel @MathisHammel
62K Followers 534 Following Co-fondateur et CTO @Agoratlas. Compte inactif, retrouvez-moi sur BIueSky 🙃
Laluka@OffenSkill @TheLaluka
6K Followers 1K Following Sharing is Caring, Hacker, Eternel Learner, Cat! =^~^=
Binni Shah @binitamshah
141K Followers 164 Following Linux Evangelist, Malwares, Security enthusiast ,Investor,World Economy, Finance,Contrarian , Philanthropist , Reformist , Sigma female [email protected]
Korben @Korben
127K Followers 10 Following Blogueur tech depuis 2004. Cybersécurité, Linux, vie privée, IA, open source et masse de bidouilles. Fondateur de https://t.co/njss2QtUM7, le blog tech & geek de référence.
Swissky @pentest_swissky
22K Followers 1K Following RedTeam | Pentest Author of PayloadsAllTheThings & SSRFmap https://t.co/w1ZLRqoafG
Kévin GERVOT (Mizu) @kevin_mizu
7K Followers 784 Following Vulnerabilty researcher at @assetnote 🐛 | DOMLogger++ developer 👨🏻💻 | CTF with @FlatNetworkOrg, @rhackgondins 🦦 | @ECSC_TeamFrance 2023 🇫🇷
Root-Me @rootme_org
20K Followers 475 Following Root Me allows everyone to test and improve their knowledge in computer security and hacking. Legal. Free. Realistic. Discord: https://t.co/G6y1wDrdOn
ANSSI @ANSSI_FR
84K Followers 54 Following Compte officiel de l'Agence nationale de la sécurité des systèmes d'information (ANSSI) | Retrouvez les alertes de #cybersécurité sur le compte @CERT_FR
ph0wn @ph0wn
948 Followers 77 Following smart devices CTF, 24-25 novembre 2023 Mastodon: @[email protected]
Ange @angealbertini
25K Followers 916 Following Reverse engineer, file formats expert. Corkami, CPS2Shock, PoC||GTFO, Sha1tered, Magika... Security engineer @ Google. He/him.
Thomas Roccia 🤘 @fr0gger_
35K Followers 2K Following AI Security x Threat Intel · Threat Researcher · Creator of #Unprotect & #NOVA · Malware Warlock · Python 🧡 · Prev @Microsoft @McAfee_Labs
Axelle Ap. @cryptax @... @cryptax
6K Followers 288 Following Mainly about security, OS, mobile phones. The postings on this page are solely my own opinion and do not represent my employer.
Nicolas Grégoire @Agarri_FR
28K Followers 628 Following Web hacker and Burp Suite Pro trainer Refer to https://t.co/D5tRH7U2hg for trainings Follow @MasteringBurp for free tips and tricks
The Hacker News @TheHackersNews
1.7M Followers 2K Following The #1 trusted source for cybersecurity news, insights, and analysis — built for defenders and trusted by decision-makers.
Nishacid @Nishacid
2K Followers 257 Following Cybersecurity enthusiast | Bug Hunter 🪲| Staff @rootme_org | @GrehackConf 🏔️ | CTF @RMUBYGG 🇫🇷
voydstack @voydstack
2K Followers 1K Following VR @Synacktiv | CTF with @RMUBYGG, @Hexagonctf, @ECSC_TeamFrance 20/21/22/23/24
🥝🏳️🌈 Be... @gentilkiwi
62K Followers 291 Following A kiwi coding mimikatz & kekeo github: https://t.co/eS3LVgU6i0 Head of security services @banquedefrance Tweets are my own and not the views of my employer
PagedOut @pagedout_zine
6K Followers 10 Following Paged Out! is a free magazine about programming, hacking, security hacking, retro computers, modern computers, electronics, demoscene, and other amazing topics.
Gynvael Coldwind @gynvael
39K Followers 1K Following security researcher/programmer/director @ HexArcana Cybersecurity GmbH ⁂ @pagedout_zine ⁂ @DragonSectorCTF ⁂ https://t.co/ShG2c5As1K ⁂ ex-Google ⁂ he/him
Caido @CaidoIO
11K Followers 35 Following We help security professionals and enthusiasts audit web applications with efficiency and ease
Kyle Martin @ElykDeer
203 Followers 118 Following Code simplifier; Passionate about bad customer service; Messiah of graphs; All opinions approved by management
Projet FOX @ProjetFOX
11K Followers 1 Following OSINT | GEOINT | CYBERSEC | GÉOPOLITIQUE | Nous sensibilisons et appliquons nos techniques de #renseignement aux crises et aux conflits internationaux. 📡
Alb310 @Alb_310
268 Followers 447 Following @ProjetFox 🦊 | CTI Analyst | OSINT & Threat Intelligence | 🇱🇧🇫🇷
Samsam5664 @samsam5664
2 Followers 36 Following
RandoriSec @RandoriSec
2K Followers 152 Following Cybersecurity company founded by security experts providing the following services: Security audits, Vulnerability research, SecOps, SecArch and Trainings
télégrenoble @teleGrenoble
7K Followers 478 Following 📺 Votre télé au cœur des Alpes 🎥 TNT canal 38 - Box chaîne 30 Encore plus d'actualités, de reportages et d'émissions juste ici ⤵️
Dataflow Security @dfsec_com
5K Followers 4 Following
PentHertz @PentHertz
2K Followers 108 Following 📡 Company specializing in RF and Hardware security #cybersecurity #deeptech
OSINT Industries @OSINTindustries
25K Followers 1 Following OSINT-powered tools for email and phone number investigations. Telegram: https://t.co/wzX59rY4LS Linkedin: https://t.co/ivbM2gkKnq
Megadose @palenath
6K Followers 477 Following President - Founder @OSINTIndustries | Open Source lover
Aituglo - Cassim @aituglo
2K Followers 394 Following Full time Bug Bounty Hunter | 2x MVH YesWeHack LHE | @CaidoIO ambassador | Weekly newsletter at https://t.co/25ZYGAYiQc
Unblvr @Unblvr1
467 Followers 42 Following CTF player | https://t.co/qfpNfBaxFK | https://t.co/fpmI3UGuh8
Vincent BOUZON @b0l0k_
456 Followers 1K Following 🧑💼 Director @Ledger 🆓 https://t.co/yNkYBawMQL 🕸️ https://t.co/Nf8JfILyDn
𝚃𝚊𝚌𝚝𝚒�... @OSINT_Tactical
21K Followers 3K Following 🥇2024 NMP Hackathon 1st place | 3x @Tracelabs Gold Badge 🥇| 3x Silver Badge 🥈 | 1x Bronze Badge 🥉| https://t.co/z76OiEDpYO
Potié Yulia @YuliaPotie
82 Followers 81 Following Diplômée en biologie👩🔬 et du @CcstMaster à Grenoble
Lucie Moulin @Pr0metheus06
3 Followers 4 Following
ACONIT @AconitGre
84 Followers 78 Following Association pour un conservatoire de l'informatique et la télématique Grenoble Computer Museum
Lupin @0xLupin
18K Followers 759 Following Roni Carta alias Lupin. Founder & CEO @ Depi. R&D. Red Teamer. Bug Hunter. Musician 🤘
Hackcyom @secnumcloud
60 Followers 74 Following Cybersecurity consulting and audit services #secnumcloud
kr[HACK]en @krhacken
27 Followers 19 Following #krHACKen club #CyberSécurité Esisar Grenoble-INP #SEC#CTF #Awarness
Alvaro Muñoz @pwntester
13K Followers 511 Following Security Researcher with @XBOW. CTF #int3pids. Opinions here are mine! bluesky: https://t.co/9HRRzpBECt
Worty @_Worty
3K Followers 574 Following Organizer of @HeroCTF || ctf w/ @FlatNetworkOrg || TeamFR 2021, 2022 & 2025 🇫🇷 || Breaking stuff @ Depi
Volker @volker_carstein
591 Followers 611 Following Hacker 💻 speaker 📣 Jack of All Trades 🃏 Social Engineering, OSINT, AD, TTRPG Pentester / Red Team Operator @ Bsecure / Parabellum Services
CSAWEurope @CsawEurope
252 Followers 281 Following Grenoble-INP Esisar is inviting university students to participate to the European final of CSAW Cybersecurity Games and Conference
Bastien Tauran @bastien_tauran
11 Followers 61 Following PhD student on space telecommunications at @ISAE_officiel and @TeSA_Recherche. Enjoying space, aeronautics, and coding.
Clémentine Maurice @BloodyTangerine
3K Followers 501 Following Researcher @CNRS. Feminist. I work on micro-architectural security.
Aleknight @_Aleknight_
60 Followers 55 Following Member of @Securimag_ Security researcher at @RandoriSec
hydrabus.com @hydrabus
1K Followers 251 Following Open source evolutive multi-tool which help you to Analyze/Debug/Hack/PenTest all types of electronic bus/chipset
Charles Fol @cfreal_
4K Followers 709 Following @Synacktiv – previously @ambionics @LexfoSecurite – blogs: https://t.co/cLoNdCGPU7 https://t.co/JVMLjUzTJU https://t.co/t9a5IcOXSU
d0riane rHACKoon 🦝 @DorianeBrt
84 Followers 220 Following #cybersecurity, #OSINT & #blockchain 🌲🏔️🌈 | Chair & orga of @GrehackConf 👻 | 🦝🚩



























