Sidney Falhun
Just Hacqueen
🌟 Profile
Cybersecurity enthusiast since 2011 with 6 years of experience in software development and over a year in both offensive and defensive security. Skilled in vulnerability analysis, Python automation, SIEM tools (Sentinel), forensic and OSINT investigations. Active community member, co-founder of OSINT-FR, conference speaker, and former organizer of Sigsegv. Passionate about joining innovative and collaborative tech teams.
🔨 Technical Skills
Languages: Python, PowerShell, C#, JavaScript, Bash, PHP, C, C++
Security: Microsoft Sentinel, WithSecure, DependencyCheck, O365 Security & Compliance
CTI / OSINT: PowerBi, investigation techniques
Dev: SharePoint, PowerApps, Flow, AngularJS, Android, Web backend, Git
Tools: VS Code, Burp Suite, Nessus, Nmap
Forensic: Autopsy, Volatility, Memory & Disk analysis, Wireshark
RE & Mobile: Ghidra, Jadx, Frida
💼 Professional Experience
📅 CGI France — Cybersecurity Consultant (June 2023 – Dec 2024)
- Static code analysis (Java, C#)
- SIEM Management (Microsoft Sentinel)
- Security Awareness / GDPR / PAS review
📅 SharePoint / O365 Developer (Oct 2017 – Jun 2023)
- PowerApps, AngularJS, SharePoint 2013
📅 Android Developer (Apr 2017 – Oct 2017)
- Expense app with OCR (Kofax)
🎤 Community & CTF
- 📢 Speaker @ LeHack 2019 — OSINT & PowerBI
- 🧠 Co-founder OSINT-FR
- 🛠️ Staff @ Sigsegv
- ⚡ CTF Player — LeHack, BreizhCTF, Root-Me
🎓 Education
BTS SIO — Services Informatiques aux Organisations (2014)
🌍 Languages & Interests
Languages: French (native), English (proficient)
Interests: CTFs, OSINT, Cyberculture, Swimming