
Chief Stagiaire Officer (titre honorifique) @Synacktiv
Joined February 2015
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Antoine Gql retweeted
🚨 The #Entrypoint2027 Call For Papers is now open!
Have original offensive security research to share? New techniques, tools, or attack stories ? We want to hear from you.
📅 CFP closes: Sept 20, 2026.
Our review board will be revealed soon.
👉 cfp.entrypoint.fr/entrypoint…
Antoine Gql retweeted
Our post-quantum cryptography series continues!
This new article by @_bluesheet unpacks the hybridization of key exchanges, covering theory and implementations.
Read all about why it matters, how to approach it safely, and some misconceptions here 👇
synacktiv.com/en/publication…
Antoine Gql retweeted
#ECSC2025 | 🐓 Premier jour de compétition !
⌨ Aujourd'hui, les équipes s'affrontent sur des épreuves en mode jeopardy : crypto, reverse, pwn, web, forensics, hardware…
🧠 L'atout de la #TeamFrance : la complémentarité des compétences de ses joueurs.
Antoine Gql retweeted
#ECSC2025 | 🐓 Nous y sommes !
🇵🇱 La #TeamFrance, accompagnée des coachs de l'ANSSI, est arrivée à Varsovie, prête à relever les épreuves de l'European Cybersecurity Challenge.
📅 Au programme aujourd'hui : découverte des postes de travail des équipes et cérémonie d'ouverture.
Antoine Gql retweeted
Missed our post-quantum cryptography series?
In our latest article, we explore cryptographic hybridization, with a focus on digital signatures.
Learn how to ensure a safe transition and avoid basic implementations pitfalls here👇
synacktiv.com/en/publication…
Antoine Gql retweeted
🐓 L’ANSSI accueillait dans ses locaux les 14 jeunes de la @ECSC_TeamFrance dans le cadre de l’#ECSC2026.
🎮 L’occasion de se rencontrer IRL et de s’entraîner sur les épreuves de jeopardy et d’attaque-défense avant la compétition le 6/10 prochain.
📹Découvrez l'équipe :
Merci pour ce lab de qualité !!
Writeup from @mael91620 is now available 🎉
From coerce into SPN less RBDC, gmsa decryption, dpapi, constraint delegation w/t protocol transition to ntds dissection ! 😈
Congrats to the one who solved it
🥇@rayanlecat
🥈@_bluesheet & 🐊
🥉@_sans23
➡️github.com/mael91620/Barbhac…
Let's go to Poland ! 🚀
#ECSC2025 | 🐓 Découvrez la #TeamFrance 2025 !
🇫🇷 Sélectionnés à l'issue du FCSC, les joueurs de la @ECSC_TeamFrance représenteront la drapeau tricolore à Varsovie, en Pologne, dans le cadre de l'European Cybersecurity Challenge.
🔔 RDV en octobre !
PS: #YouAreAllWinners
Antoine Gql retweeted
For the final talk of the Synacktiv track, @_bluesheet and Oposs give a retex on post-quantum cryptography #SSTIC2025
Antoine Gql retweeted
To those who set the bar 🥂
Global Cyber Skills Benchmark 2025 is over, and the leaderboard has spoken. Huge congrats to the top corporate #cybersecurity teams who crushed it in this global competition:
🥇 @Synacktiv
🥈 @GMOsecurity24
🥉 downscope.org
#HackTheBox #HTB #CTF #CyberSkills #Cybersecurity #CaptureTheFlag #InfoSec
Antoine Gql retweeted
For the second year in a row, we managed to get first place at the #HackTheBox Business #CTF 2025! 🥇 Congratulations to @gmo_ierae and Downscope and thanks to @hackthebox_eu for the fun challenges! 🥳
Une belle 2ème place en crypto 🔥 Merci @ANSSI_FR pour ces super challenges, et GG à tous les participants !
Antoine Gql retweeted
On passe à la deuxième place de ce #BreizhCTF 2025, qui revient à l'équipe de @Synacktiv 🥈
Antoine Gql retweeted
Following the release of IPSpinner last week, now is the time to unveil CaptainCredz! Perform advanced, fine-grained password spraying while remaining under the radar for your next Red Team engagement 🔥
github.com/synacktiv/captain…
Antoine Gql retweeted
A few months ago, Microsoft released a critical patch for CVE-2024-43468, an unauthenticated SQL injection vulnerability in SCCM/ConfigMgr leading to remote code execution, discovered by @kalimer0x00.
synacktiv.com/advisories/mic…
Antoine Gql retweeted
🇫🇷🎙️Nouvel épisode du podcast Hack'n Speak avec @_p0ly_ & @vdehors triple vainqueurs de la Pwn2Own 🏆🏆🏆
Au programme, un retour d'expérience sur le hacking de Tesla et des anecdotes croustillantes 🚗
Bonne écoute à toutes et à tous 🎶
podcasters.spotify.com/pod/s…
Antoine Gql retweeted
The next article by @_bluesheet in our post-quantum series tackles hash-based signature schemes, including XMSS and the freshly standardized SLH-DSA (aka SPHINCS+). Sometimes, you don't need fancy maths to build robust schemes!
synacktiv.com/publications/q…
Antoine Gql retweeted
🏆 Our third and final competition winner is @b0l0k_! 🏆
A huge bravo to him, he wins an @offsectraining prize.
And a big bravo to the other 5 prechall solvers, they win #GreHack24 tickets :
🏅 @Unblvr1
🏅 @_Worty
🏅 @Elweth_
🏅 bluesheet
🏅 @aituglo
Antoine Gql retweeted
Louis Wolfers (@TG91aXMK) and Quentin Roland (@croco_byte) identified a pre-authenticated path traversal vulnerability (CVE-2024-21136, CVSS 8.6) affecting Oracle Retail Xstore Suite. It was fixed in the July 2024 Oracle Critical Patch Update. synacktiv.com/advisories/ora…

















