About

I am an ethical hacker focused on measurable penetration testing outcomes.

I'm Arpad Jo, a Certified Ethical Hacker and the founder of Web-Pentester — my independent penetration testing practice for companies that want to reduce cyber risk through controlled offensive security testing.

With a software engineering background since 2014, I bring a developer's mindset to offensive security. Understanding how applications are built from the inside out makes me exceptionally effective at finding the vulnerabilities others miss.

I personally run each pentesting engagement from scoping to reporting. I deliver clear communication and actionable findings your team can fix quickly.

arpad_jo — identity
Portrait of the penetration tester behind Web-Pentester

> name: Arpad Jo

> role: Ethical Hacker / Pentester

> status: available

My assessments are tailored to your architecture and threat profile, from startup SaaS platforms to enterprise cloud estates. Every finding is validated, documented, and tied to remediation actions your team can execute quickly.

Operating Principles

  • Test safely, never disrupt client production data.
  • Prioritize exploitability and business impact together.
  • Deliver guidance that developers can apply immediately.