About

Quick intro

I’m Peiyuan (Bobby) Ma — a cybersecurity student building a practical portfolio through projects, lab exercises, and writing. This site is where I ship work, document results, and track progress as I level up.

What I’m aiming for

I’m interested in defensive security: how systems fail, how attacks show up in telemetry, and how to design controls that are realistic to operate.

I’m also building up my fundamentals (networking, Linux, scripting) so I can go from “I understand the idea” to “I can implement and validate it.”

Home lab

I run a small Ubuntu server as a learning platform — monitoring, alerts, and automation included. Over time, I’ll publish writeups on what I build and the problems I hit along the way (deployments, hardening, and debugging included).

Tools I’m using

Contact

Best way to reach me: mpy.peiyuan@gmail.com. You can also find me on GitHub and LinkedIn.