Kin =]

HKer, InfoSec enthusiast currently into Computer Forensics, Wireless Attack, Web Security, GNU/Linux, and Open source. Also hunting CVEs :D

Aspiring to become a professional Red Team operator.

CTF Team ICEDTEACTF TeamICEDTEAA Taiwan based CTF team that I am part ofHeapUnderFlowCTF TeamHeapUnderFlowMy current Hong Kong based CTF team
CTF Contributor No Hack No CTFCTF ContributorNo Hack No CTFI created challenges and helped with the design side for No Hack No CTF.THJCC CTFCTF ContributorTHJCC CTFA Taiwai CTF event where I also contributed challenge-related work.
Hacking TryHackMePractice PlatformTryHackMeUsed for rooms, labs, and certification tracks.HackTheBoxPractice PlatformHackTheBoxUsed for labs, boxes, and web exploitation practice.CryptoHackPractice PlatformCryptoHackA platform I use for learning and practicing cryptography.
Creator UmmItOSMy ProjectUmmItOSMy own Arch-based distribution and personal Linux experiment.
Community HKPUGCommunityHKPUGI join HKPUG activities and occasionally give talks there.HKLUGCommunityHKLUGI join Hong Kong Linux User Group meetups.
Candidate OSCPOffensive SecurityOSCPOffensive Security Certified Professional - Advanced penetration testing certification.CWESHackTheBoxCWESCertified Web Exploitation Specialist - Advanced web application security certification.CJCAHackTheBoxCJCACertified Junior Cybersecurity Associate - Entry-level cybersecurity fundamentals.PT1TryHackMePT1Junior Penetration Tester - Foundational penetration testing skills certification.
MBTI INTP-TMBTIINTP-TLogician, turbulent variant. I take a system apart before I trust it.

I’ve been self-taught since I was a kid. Right now I'm studying InfoSec in Hong Kong, and the stuff I keep coming back to is red teaming, reverse engineering, and web hacking. I started taking this seriously around middle school. HTML, CSS, JavaScript first, then C#, VB.NET, a few others. I don't really touch those anymore. Lately it's web hacking and red team work.

I'm a huge GNU/Linux enthusiast. I've tried at least 20 different distros over the years. My main system is Arch Linux, seven years and counting. Yes, I'm still a student with over seven years of experience. I started back in secondary school. Right now I'm running my own Arch-based distribution called UmmItOS, named after my internet nickname. XD

I used to be a Windows user, but I'm now 100% on GNU/Linux. I only touch Windows when I'm attacking Active Directory. Lots of stories from the journey ... this is just a small part :D

GitHub Twitter Youtube

Conferences

Conferences and community meetups I attend.

JFMAMJJASOND

2025Sep 2025 · 1 eventHong Kong Python User GroupSep 22 · Attendee · HKPUG #91 - Python Gems for Real WorldOct 2025 · 1 eventPyCon HK 2025Oct 11-12 · Attendee · Sailing Together: "Raise the Sail, Let Python Prevail"Nov 2025 · 1 eventHong Kong Python User GroupNov 29 · Speaker · HKPUG #92 - The Hacker and Refactor

2026Feb 2026 · 1 eventHong Kong Python User GroupFeb 13 · Attendee · HKPUG #94 - Controlling Reality: Tests & AI MemoryMar 2026 · 1 eventHong Kong Python User GroupMar 28 · Attendee · HKPUG #96 - Project Cool Down: Build a Smart AC AI with PythonMay 2026 · 1 eventHong Kong Linux User GroupMay 4 · Attendee · 香港 Linux 用家聚會 (2026 春)Jun 2026 · 1 eventHong Kong Python User GroupJun 27 · Attendee · HKPUG #99 - "Lie" to me, PythonAug 2026 · 1 eventHITCON 2026Aug 21-22 · Attendee · When AI Acts: Hacking the Age of Agentic Systems

LessMore

8conferences joined1 as speaker

HITCON 2026Attendee

When AI Acts: Hacking the Age of Agentic Systems

Aug 21-22, 2026

Hong Kong Python User GroupAttendee

HKPUG #99 - "Lie" to me, Python

Jun 27, 2026

Hong Kong Linux User GroupAttendee

香港 Linux 用家聚會 (2026 春)

May 4, 2026

Hong Kong Python User GroupAttendee

HKPUG #96 - Project Cool Down: Build a Smart AC AI with Python

Mar 28, 2026

Hong Kong Python User GroupAttendee

HKPUG #94 - Controlling Reality: Tests & AI Memory

Feb 13, 2026

Hong Kong Python User GroupSpeaker

HKPUG #92 - The Hacker and Refactor

Nov 29, 2025

PyCon HK 2025Attendee

Sailing Together: "Raise the Sail, Let Python Prevail"

Oct 11-12, 2025

Hong Kong Python User GroupAttendee

HKPUG #91 - Python Gems for Real World

Sep 22, 2025

Event	Date	Role
HITCON 2026 When AI Acts: Hacking the Age of Agentic Systems	Aug 21-22, 2026	Attendee
Hong Kong Python User Group HKPUG #99 - "Lie" to me, Python	Jun 27, 2026	Attendee
Hong Kong Linux User Group 香港 Linux 用家聚會 (2026 春)	May 4, 2026	Attendee
Hong Kong Python User Group HKPUG #96 - Project Cool Down: Build a Smart AC AI with Python	Mar 28, 2026	Attendee
Hong Kong Python User Group HKPUG #94 - Controlling Reality: Tests & AI Memory	Feb 13, 2026	Attendee
Hong Kong Python User Group HKPUG #92 - The Hacker and Refactor	Nov 29, 2025	Speaker
PyCon HK 2025 Sailing Together: "Raise the Sail, Let Python Prevail"	Oct 11-12, 2025	Attendee
Hong Kong Python User Group HKPUG #91 - Python Gems for Real World	Sep 22, 2025	Attendee