https://jeryn.me/blog/ Notes on what I'm learning and researching - systems programming, computer science, and philosophy. en-us Tue, 21 Jul 2026 12:00:00 GMT https://jeryn.me/blog/dissecting-a-curl-bash-backdoor https://jeryn.me/blog/dissecting-a-curl-bash-backdoor Tue, 21 Jul 2026 12:00:00 GMT Someone sent me a terminal command disguised as an installer. This walks through taking it apart one layer at a time, down to a final stage that reads its command-and-control address off the Polygon blockchain instead of hardcoding it. security malware macos reverse-engineering https://jeryn.me/blog/why-this-blog-exists https://jeryn.me/blog/why-this-blog-exists Tue, 21 Jul 2026 12:00:00 GMT I'm starting a public notebook to document what I'm learning and researching - from systems programming and computer science to philosophy. Here's what to expect. meta learning