Hi, I’m Phan Viet Hanh, also known online as hanhctf.

I’m interested in Cybersecurity, Capture The Flag (CTF), Penetration Testing, Web Security, and Security Research.

My cybersecurity journey has been strongly influenced by hands-on practice through CTF competitions, vulnerable labs, and security research. I use this website to document what I learn, share technical write-ups, and keep a personal knowledge base for future reference.

Cybersecurity

My main areas of interest include:

• Web Application Security
• Penetration Testing
• Linux Security
• Windows Security
• Privilege Escalation
• Vulnerability Research
• CTF Challenges
• Security Monitoring
• Malware Analysis
• Cloud Security

I particularly enjoy understanding why a vulnerability works, rather than simply following an exploitation path.

Learning & Research

This website is primarily a personal learning journal.

I write about:

• CTF challenges
• TryHackMe rooms
• Hack The Box machines
• Vulnerability analysis
• Security tools
• Interesting attack techniques
• Defensive security concepts
• Things I discover while experimenting in my own lab