Security testing done right

Collage of images showing work at Adversify

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Our story

Founded in 2022, Adversify is a specialist penetration testing consultancy.

Born out of a desire to do things differently, Adversify set out to redefine penetration testing engagements and help businesses discover attack paths and vulnerabilities, commonly exploited by real-world adversaries.

Adversify take an attack surface-led approach to penetration testing, rather than focusing on individual technologies. This holistic view ensures comprehensive coverage of the target systems, minimising the risk of security blind spots.

We want to help businesses leverage penetration testing services to challenge cyber security assumptions, assess deployed security controls and guide them through creating effective security testing objectives.

Adversify differ from traditional penetration testing providers by prioritising outcomes over time. Our goal is to help your organisation achieve it's security goals and having experienced it ourselves, we know that sometimes fixed-term engagements, don't always go to plan and can leave critical issues unexplored.

Therefore, to make sure your organisation gets the most out of its penetration test, we design all our penetration testing engagements with a series of deliverables and are sold for a fixed project price.

We’re experts

Our team of experts hold industry-leading certifications and are dedicated to delivering high-
quality security engagements. We leverage our extensive knowledge and experience to identify
vulnerabilities and provide actionable insights that will strengthen your security posture.

We think big picture

Adversify design all penetration testing engagements based on the systems attack surface. This holistic approach helps ensure that no blind spots are overlooked.

We build relationships

We love working with each and every one of our clients. Our approach goes beyond finding vulnerabilities; it's about creating a lasting partnership rooted in trust and reliability. Clients at Adversify aren't just names on a list; they're part of our family.

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// Meet the founder

Daniel Horvath

Founder and Senior Penetration Tester

Dan became a penetration tester in 2017, after serving within a specialist cyber crime unit in his local police force.

During his career, Dan has worked for multiple security consultancies and helped defend organisations in both the public and private sector.

A specialist in both external perimeter and internal enterprise network penetration testing, Dan believes that a true security testing engagement must encompass the entire attack surface, else it's not providing full security assurance.

Dan is passionate about helping businesses become more secure and founded Adversify off the back of a desire to provide penetration testing services that move past theoretical risk and help businesses defend against current real-world adversaries.

Dan's vision was to create a business of like-minded offensive security professionals who want to go above and beyond for businesses and openly share knowledge with our clients and the community, to improve cyber security for all organisations.

Headshot of Dan

Hear it from our clients

"Adversify have gone above and beyond to assist us on multiple occasions. Extremely helpful team and would 100% recommend!"
Tom Sabine
Director
"As a small company, unsure of how to approach my cyber security, Adversify have gone above and beyond to meet my needs. Dan at Adversify provided exceptional customer service and helped me understand what my business needed.

They have made a daunting process effortless and I cannot thank Adversify enough.
I recommend this company to all my industry colleagues."
Fresh Medical Aesthetics
Director
"As a small provider of general security consultancy services, often we find we have a skills gap or client requirement that we can't directly fulfil. Dan brings a wealth of experience to the table and is a trusted supplier of white-label services to help us meet our clients needs. Feedback we receive is absolutely amazing. It's always a pleasure working with Adversify and we can be absolutely confident that our clients will receive a best-in-class customer experience."
Paul Roach
Principal Consultant
"Adversify provides highly professional and competent penetration testing services. The resulting deliverable is of great quality, with attention to detail and adherence to custom requirements. It was a pleasure to engage with Adversify throughout the process!"
Max Batsurin
Technical Director
"We used Adversify to conduct a Penetration test against our SAAS Rootshell Vulnerability Management Platform.  As a Penetration testing company ourselves we required a highly detailed and skilled consultancy to deliver an in-depth  independent Penetration test and Adversify provided everything we required.  I would not hesitate to recommend Daniel Horvath and his team for future work."
Paul Cronin
Co Founder, Rootshell Security
"Adversify recently conducted a comprehensive internal penetration test for our organisation, and the results exceeded our expectations. The team demonstrated exceptional expertise, thoroughly assessing our systems while maintaining a collaborative and professional approach throughout the process.

The penetration test was detailed, methodical, and provided valuable insights into our security posture."
Graham Fisher
Director, IT & Digital