About
👋 Hi, I’m Sithum Nimlaka
I’m a passionate Cybersecurity professional, System Administrator, and Network Engineer with a deep interest in building secure systems, exploring offensive and defensive security techniques, and constantly learning through hands-on labs.
Currently working as a Senior System Administrator, I manage enterprise-level infrastructure and simultaneously dive into cybersecurity projects, CTFs, and home lab setups. My journey blends practical IT experience with a strong focus on ethical hacking and security research.
🔐 My Focus Areas
- Cybersecurity & Ethical Hacking
- System & Network Administration
- Red & Blue Team Labs
- Virtualization & Firewalls (pfSense, VMware)
- Penetration Testing & Vulnerability Assessment
- Learning through CTFs, TryHackMe, HTB & Custom Labs
🧪 What You’ll Find on This Site
This site serves as my public knowledge base and portfolio. You’ll find:
- ✅ Cybersecurity Projects & custom tools/scripts
- ✅ Writeups from TryHackMe, Hack The Box, and real-world practice
- ✅ My Labs — from Active Directory setups to pfSense firewalls
- ✅ Certifications, achievements, and badge collections
- ✅ Technical Blog posts on tools, techniques, and lessons learned
🧠 Current Goals
- 🎯 Achieving PNPT and OSCP certifications
- 🛡️ Building an advanced SOC lab environment
- 📚 Sharing knowledge with others and learning from the community
📫 Get in Touch
I’m always open to collaboration, discussions, or new opportunities.
Thanks for stopping by!
“Secure systems are built by those who understand how to break them.”