About Me

Hi, I’m Nithin Kumar - a penetration tester.

I’m curious about how systems work, how attackers break them, and how defenders secure them.
My learning approach is hands-on: solving cybersecurity labs, experimenting, failing, fixing, and improving.

What this site is about

This site is where I document my journey.
You’ll find:

• Lab writeups and walkthroughs
• Research notes
• Practical attack and defense explanations Everything here is written with one goal: learn by doing.

My focus areas

• Web, Cloud, and Active Directory penetration testing
• AWS and M365 cloud security
• System hardening and security benchmarks
• Scripting and small automations (Python, Bash, PowerShell)

Why I share my notes

• Cybersecurity is constantly changing.
• Sharing what I learn helps me understand it better - and helps others learn with me.
• If you enjoy hands-on security and labs-based learning, you’ll feel right at home here.