Hello, World!

I’m stackachu and this is my blog, where I post about my work as an Ethereum security engineer. Below you can find a collection of my blog posts. You can read more about me on the about page.

Blog posts

How I found a critical-severity vulnerability on Immunefi

In this inaugural blog post I will walk you through the steps that lead me to find a critical-severity vulnerability in Balmy that resulted in a $25,000 payout on Immunefi.

Aug 22, 2025