Backend Systems
High-performance services and APIs in Go and C++ - FastHTTP, WebSocket and REST, built for speed and concurrency.
// red teamer · vulnerability researcher · hanoi
Red Teamer & Vulnerability Researcher - I break into systems, find what others miss, and build high-performance offensive-security tooling in Go and C++. Active at @kcsc-club, shipping open source from Hanoi, Vietnam.
# clone any of my open-source repos and build in seconds
$ git clone https://github.com/hypnguyen1209/fasthttp-reverse-proxy
// ascii.orb · click me
High-performance services and APIs in Go and C++ - FastHTTP, WebSocket and REST, built for speed and concurrency.
Reverse proxies, self-hosted VPNs and traffic routing - fasthttp-reverse-proxy, proxigo and ionscale-vpn.
Lightweight HTTP frameworks and web infrastructure - like ming - with a focus on minimal, readable code.
Breaking stuff at @kcsc-club - CTF infrastructure, reverse engineering and hands-on security research.
Dig into the problem, read the source, and reverse-engineer how things actually work under the hood.
Ship minimal, high-performance solutions in Go and C++ - measured, tested and documented.
Release it, maintain it, and help others learn. Everything I can, out in the open.
offensive-claude - Offensive security toolkit for Claude Code - red team, exploit dev, AD attacks, EDR bypass, mobile pentest (301★)
go-advanced - Vietnamese Go book by ZaloPay teams (856★)
fasthttp-reverse-proxy - High-performance reverse proxy with load balancing (4★)
proxigo - Windows network traffic routing tool (3★)
ming - Lightweight HTTP web framework (1★)
ctf-deploy - CTFd setup for beginners (9★)
ionscale-vpn - Self-hosted Tailscale VPN (10★)
all repositoriesOpen-source home - 184+ repositories, automated with GitHub Actions CI.
Primary languages for high-performance services, tooling and systems work.
Containerized builds and deploys on Linux servers.
Tailscale / ionscale, reverse proxies and traffic routing across networks.
Claude and Codex in the loop to design and ship faster.