Hi, I’m Nitel 👋

Application Security & Penetration Testing Specialist based in Seoul, South Korea.

I write about offensive security, penetration testing, and the intersection of secure development — from breaking things in labs to building them the right way in production.

What I Do

I’m an offensive security professional with a background in full-stack development (React.js / Node.js). I hold the HTB Certified Penetration Testing Specialist (CPTS) and PJPT certifications, and I’m currently pursuing OSCP.

My work spans Active Directory exploitation, internal network penetration testing, web application security (OWASP Top 10), and secure code review — bringing a developer’s perspective to every engagement.

What You’ll Find Here

• 🔴 HTB & VulnLab machine writeups — step-by-step walkthroughs of retired boxes
• 🛠️ Tools & scripts — automation and recon utilities I build along the way
• 📖 Learning notes — AD attacks, AppSec concepts, and OSCP prep
• 💡 Dev × Security — thoughts on secure SDLC, code review, and AppSec for developers

Certifications

Badges

Connect

• 📧 hello@phyozinkhant.dev
• 🌐 phyozinkhant.dev
• 💼 LinkedIn
• 🐙 GitHub

Currently open to penetration testing and application security roles. Eligible to apply for work visa.