hello, I'm

Yubo Sun

Cybersecurity · Creative Coding · Photography

I build, protect, and document—turning curious questions into resilient systems and useful stories.

Explore my work ↘Say hello ↗

Hand-drawn desk with a cat, laptop, camera and security objects

build · protect · share ♡

projects / 02

Projects

Things I build to explore security, automation, and resilient systems.

Python · security automationHealixAI-assisted Linux monitoring and real-time auto-healing · BearHack 2025View project ↗Next.js · AI interpretationAstryxMade with Yuxin Liu ♡Eastern BaZi and Western astrology in one fusion readingView project ↗

writeups

Security Notes

Security writeups, study notes, and ideas collected along the way.

CTF · Jan 28, 2024Espionage CTF — ISSessions 2024Read article →

More notes ＋

IELTS Listening Notes (Chinese Version)→IELTS Reading Notes (Chinese Version)→IELTS Speaking Notes (Chinese Version)→IELTS Writing Notes (Chinese Version)→IELTS Writing Part 1 Notes→IELTS Writing Part 2 Notes→IELTS Speaking 202301–202304→IELTS Speaking 202205–202208→IELTS Speaking 202209–202212→

other paths

Portal

A few more corners of the internet I call mine.