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About Us

Specialist-led penetration testing. Clear scope. Fixed pricing.

AppTest Direct is an independent, UK-based penetration testing company founded to make professional security testing straightforward to purchase, understand and act upon.

Built on years of hands-on penetration testing and technical leadership experience, we focus on the areas we know best: web applications, APIs and external infrastructure.

Our approach combines experienced, qualified testers with structured methodologies, manual testing and appropriate automated tools. Findings are reviewed and verified by a qualified tester, with clear reporting and practical recommendations to help businesses understand and address security weaknesses.

We believe arranging a penetration test should be straightforward. That's why our core services can be ordered online, with clearly defined scope, upfront pricing and a simple purchasing process. For more complex requirements, we provide individually scoped quotations.

Our focus is simple: deliver quality penetration testing, communicate clearly and make the entire process as straightforward as possible.

Michael Jepson, Co-Founder and Technical Director at AppTest Direct

Michael Jepson

Co-Founder & Technical Director

Lead Penetration Tester

Michael is an experienced penetration tester and technical leader, with over eight years of professional penetration testing experience and more than a decade of technical know-how gained during his service in the Royal Navy.

Following his Royal Navy career, Michael progressed from junior penetration tester to Head of Penetration Testing, gaining extensive experience delivering complex security assessments and leading red team engagements along the way.

Throughout his career, he has delivered and overseen hundreds of penetration tests across a wide range of technologies and environments, developing particular expertise in web application, API and infrastructure security.


As Technical Director, Michael leads AppTest Direct’s technical services, testing methodologies and delivery standards, while remaining hands-on across every penetration test to ensure assessments are thorough, evidence-led and delivered to a consistently high standard.

Professional Credentials

Deborah Jepson, Co-Founder and Operations Director at AppTest Direct

Deborah Jepson

Co-Founder & Operations Director

Deborah brings extensive experience in technical operations, management and project delivery, shaped by more than 16 years of service in the Royal Navy. Her background combines technical understanding with a disciplined approach to leadership, planning and accountability.

As Co-Founder and Operations Director, Deborah leads the operational delivery of AppTest Direct’s services, overseeing engagement coordination, customer communications and quality processes. She translates technical requirements into organised delivery, keeping customers informed and engagements on track.

Working alongside Michael, Deborah brings operational leadership to every stage of the customer journey, ensuring the business delivers clear communication, professional service and a straightforward experience at the heart of AppTest Direct.

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