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Who I Am

HAHWUL
Hey there! I'm HyunHwan Lee, but you might know me better as HAHWUL. I'm an offensive security engineer and hacker who also loves coding—mostly with Rust, Ruby and Go.

'hahwul' is a new word made by remixing my name, and that's me. Feel free to call me HAH-hul or HOWL—whichever you prefer!

Catch me on 𝕏, on Github, and on Instagram.

Offensive security engineer

Online, I’m known as a bug bounty hunter and open-source developer, Offline, I’m a specialist in Offensive Security Engineering (Red Team) and Application Security (AppSec), DevSecOps roles.

Programming life

Starting from C and C++ in my childhood, through my college years, and until now as an engineer, I've learned and used various programming languages. Currently, I primarily use Rust, Ruby, Crystal, and Go.

While I have different reasons for liking each language, as Matz (the creator of Ruby) wished, I commonly find joy and happiness when using these languages.

I hope to see Ruby help every programmer in the world to be productive, and to enjoy programming, and to be happy. Matz

That's why I also enjoy open source activities. I've created various security-related tools and like contributing to other security projects as well. If you're curious about my work, please check my Github and Projects pages.

Blogging life

I’ve been known as “hahwul” since 2016, but my journey into blogging about security and development started back in 2010, during my student days. Since then, my blog has been a significant record of my journey.

My name means bright flame. That's why I designed my logo with a fiery touch! 🔥