Software That Works Under Pressure
A cybersecurity and software studio from Colombo, Sri Lanka — building secure systems, breaking insecure ones, and shipping tools that security professionals actually use.
Ryan Sebastian
Cybersecurity Specialist · Full-Stack Developer · Founder
I started Ghost Protocol because I was tired of seeing security treated as an afterthought. Most software is built to demo well — it breaks the moment real users, real data, and real attackers show up. I build the other kind.
With years of experience across penetration testing, threat modeling, and secure architecture — plus hands-on engineering in Rust, TypeScript, and Python — I bridge the gap between finding vulnerabilities and building systems that don't have them.
How we work. Every project.
Code > Talk
We ship working systems, not slide decks. Results matter.
Security First
Every line is written with adversaries in mind. No exceptions.
Performance
Fast, efficient, minimal. We don't build bloatware.
Low Profile
We let our work speak. No noise, no hype.
15+
Production Systems
200K+
Lines of Code
5
Security Products
4+
Years in Security