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/ The firm

Built by people who break things.

4rthur is a group of offensive security specialists in Kuala Lumpur. We built our own tooling because the alternative was billing you for the time it takes to do it by hand.

Wong Yik Han
Co-founder

Ex-Malware Researcher to Ex-Cyber Engineer, Now doing Offensive Security, with AI.

LinkedIn ↗
Tommy Wong Choon Khit
Co-founder

LinkedIn ↗
Ng Chen Kai
Co-founder

LinkedIn ↗
Choo Chi Siang
Co-founder

LinkedIn ↗
/ Certifications

What the team holds between them.

Earned credentials, held across the team.

OSCP
OSCP+
CRTP
CRTO
eJPT
CAPEN
National Cyber Security Agency of Malaysia
/ Licensed

NACSA licensed penetration testing service provider.

Licence 20381-02, issued by the National Cyber Security Agency of Malaysia under the Cyber Security Act 2024.

u9up
/ Research partner

u9up, our AI security research partner.

We research LLM and agent attacks together, run training through the u9up community, and bring u9up researchers onto our AI Offensive Assessment engagements, under our supervision. Two of our co-founders also co-founded u9up.

u9up.com ↗

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