Youssef Kessentini
A Security Engineer with a passion for breaking things and building them back better.
I’m Youssef Kessentini, and I operate across offensive cybersecurity, full-stack development, and competitive programming — not because I have to, but because I genuinely can’t stop.
I’m not the kind of person who learns from tutorials alone. I learn by doing, failing, debugging at 2am, and doing it again until it works. That trial and error process is what drives me — every bug fixed and every box rooted feels like a small victory that keeps pushing me forward.
I hold the Hack The Box CJCA certification, build real-world projects, and regularly compete in programming contests. The results aren’t always perfect, but the commitment is always there.
This blog is where I document the journey — writeups, project breakdowns, and honest accounts of things I learned the hard way.
What I Do
| Domain | Focus |
|---|---|
| 🔴 Offensive Security | Penetration testing, HTB machines & challenges, CTF competitions |
| 💻 Full-Stack Dev | Building real-world applications end-to-end |
| 🧠 Competitive Programming | Algorithms, problem solving, programming contests |
Certifications
- 🟩 HTB CJCA — Hack The Box Certified Junior Cybersecurity Associate
Find Me
- 🐙 GitHub — 0xkoat
- 🟩 HackTheBox — Koated
- 💼 LinkedIn — Kessentini Youssef
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