About
I’m Minsoo Choo, a computer engineering student at the University of Waterloo as well as a FreeBSD contributor.
What I Do
I contribute to one of the most important open-source operating systems in the world as a FreeBSD developer, and am an LLVM committer focused on improving LLDB for FreeBSD — making debugging better for developers working on the platform.
As a CHERI ambassador, I work with microarchitectural innovations that are shaping the future of processor design. CHERI (Capability Hardware Enhanced RISC Instructions) represents an evolution in computer architecture, and I’m excited to explore how these hardware features integrate with operating systems.
What You’ll Find Here
This newsletter is my space to share insights and updates from the intersection of systems programming and hardware security. You can expect:
Technical Deep Dives: Posts about CHERI capabilities, RISC-V developments, and kernel programming insights
Project Updates: Progress reports on my design team initiatives and personal technical projects
Work Chronicles: Experiences and lessons from my embedded systems work
Life Notes: Occasional reflections on the journey of a computer engineering student navigating the world of systems programming
Pubkeys
PGP
pub ed25519 2026-07-27 [C] [expires: 2029-07-26]
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uid [ultimate] Minsoo Choo <minsoo@minsoo.io>
uid [ultimate] Minsoo Choo <mchoo@FreeBSD.org>
sub ed25519 2026-07-27 [S] [expires: 2029-07-26]
sub cv25519 2026-07-27 [E] [expires: 2029-07-26]
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pub ed25519 2025-08-03 [SC] [revoked: 2026-07-27]
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ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOTqKhv0uLUeLTRawfqFgDZYd2WL3aEQwe4Cx1gfqwvV minsoo@minsoo.io
sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAIHbqH2gxfnPdIrUoSxVqeIR1TTKZsp0S5DZPsY/Rcs+eAAAABHNzaDo= minsoo@minsoo.ioGenAI Usage Disclosure
Note: I quit heavily using GenAI for blog posts as of May 29th, 2026. The decision was based on the fact that LLM’s output somewhat changes the tone of my writing. From now on, I’ll only use GenAI for correcting grammar mistakes or similar minor issues. Below is the disclosure note that applied to all the articles I published before the date above.
On AI Tools: I believe in transparency about tool usage. While I leverage LLMs for research (gathering resources) and refining my writing (wording and proofreading), all technical insights, opinions, and core content come from my own experience and understanding.
I use the following prompt on Claude Opus 4.7 for refining my writing:
Below is my article. Make it sound like a professional software engineering post. Make it smooth and reword if needed.
<article>
After Claude completes its revision, I carefully proofread to ensure no meanings were altered, nothing was added that I didn’t intend, and the content remains authentic to my original thought.
On Accessibility: All posts are completely free to read. If you choose to subscribe, consider it a donation to support my work and the time I invest in sharing these technical explorations. Your support helps me dedicate more time to open-source contributions and educational content.
