U-Zyn's Nodes

TL;DR: I built a self-hosted open-source email server known as AIMX.

Just took part in TISC @ DEF CON Singapore finals today.

Just discovered ntfy.sh, a very handy push notification service that does not require any signups.

🦞 OpenClaw is all over my feeds.

Raspberry Pi prices have been rising aggressively, driven by surging memory chip demand.

An unfortunate reality of the modern web is that many websites check your User-Agent string and serve different content (or no content at all) based on what browser they think you are.

3D printing is fun.

Back in June 2025, I submitted a security Capture-The-Flag (CTF) challenge for the annual The InfoSecurity Challenge (TISC) 2025, organized by Centre for Strategic Infocomm Technologies (CSIT), an agency in the Ministry of Defense of Singapore, and it rev…

Remember back in the pre-GUI OS days when everything was done with commands typed on keyboard?

It has been a dream of mine for 20 years to one day attend DEF CON, and it has finally happened.

TL;DR: Passkey has a clever design that allows users to know if your keys are silently stolen and cloned, but the feature is currently not very useful today because its major providers such as Apple, Google and Microsoft do not play ball.

Released Passcay over the weekend.

Another day, another AI coding agent.

Thank you Bernard Leong, a friend, fellow entrepreneur & technologist for the kind invitation.

Fun project. 16 years ago today, in 2009, I built this dashboard for IMDA (then Media Development Authority of Singapore [MDA]) to showcase the traffic to MDA-funded startups.

My journey started casually enough—working on Tixie, I was looking into simpler ways to deploy Rust-based Lambda functions when I came across Cargo Lambda.

The Roadmap Pitfall If you run a company, do not release roadmaps or make future promises.

Spelling, or 听写, is a very familiar process for parents of Singaporeans with primary-school-going children, or in fact, for parents worldwide.

Digg is coming back!

Watch the OpenAI GPT 4.5 announcement video.

My workflow with generative AI has been changing quite rapidly over the past two weeks.

Since the introduction of Perplexity's Deep Research on Feb 14, 2025, now the 3rd major deep research AI offerings after OpenAI ChatGPT's, and Google Gemini's, I have been using it rather extensively.

Q: Would you consider releasing some model weights, and publishing some research?

It must have been be a challenging week for the folks at OpenAI and other similar closed-source foundational AI model companies.

Remember a freer web?

A proud moment that started with a simple catch-up with a good friend.

Let’s Build Like It’s 2005 Software engineering has become overwhelmingly complex.

Hello again.