Programmer
Websites, web apps and the systems behind them — built for businesses, built to last.
Enter the Programmer pageIT, Cybersecurity & Post-Quantum Cryptography Consultant
Reliable IT, systems that hold up to attack, and encryption ready for the quantum era.
Enter the Consulting page
a.k.a. Sining · one person, two disciplines
Two jobs, one mindset. I write code like an attacker is reading it — and I give security advice a developer can actually ship.
See it in motion.
A silent 10-second loop: code is typed in an editor, a network scan finds and patches vulnerabilities, then a padlock closes above the name Art Yap.
Write it. Scan it. Lock it down.
Build it right. Then try to break it.
Doing both makes each one better. Developers get advice they can ship; businesses get software that was tested by someone who thinks like an attacker.
Don't trust. Verify.
A security consultant's site should pass its own audit. Hold the button to run a live check of this page. It runs in your browser; the only request it makes is one back to this site to read its headers.