Stay Secure With Our Security Tests

Don’t worry, we offer all the normal pen testing stuff you’d expect.

Web and mobile app testing

Web & Mobile Application Testing

If your product is an app then your entire business is staked on the security of that app. We'll help you protect it.

External infrastructure testing

External Infrastructure Testing

Your external targets are often the first port of call for hackers. We'll use their techniques so you can find vulnerabilities before they get to them.

On-site testing

On-site Testing

We can visit your offices to test your internal infrastructure, access to secure areas, physical IT entry-points, and susceptibility to attack via wifi.


Phishing Simulations

We’ll provide realistic email and telephone phishing campaigns that will build a culture of ‘Security-Awareness’ into your team’s DNA.

Expertise you can trust

An elite team of ethical hacking experts with a diverse mix of skills, disciplines and industry backgrounds.

We have over fifty years’ experience in some of the most security-conscious organisations in the world, from defence agencies to energy companies. In the process, we have learned the importance of being responsive to clients changing needs, and deadlines. ‘That’s why our panel of carefully selected pen-testers all have years of client-facing experience and know how to make security practical.

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Don’t take our word for it

“Working in a fast paced environment where customers require rapid change and development OnSecurity provide us with a service to support even the tightest timelines. The portal allows us to easily quote, book and review penetration test findings in a simple and user friendly way.”
Grant Wylie, Product Owner -
“OnSecurity’s ability to triage security tickets has made the best use of our budget and provided tremendous bang for buck”
Charlie Cooper, Product Manager, Blutui
“Penetration testing is an important aspect of our security programme and we choose our partners very carefully. We found OnSecurity’s testers to be extremely knowledgeable and we have been very pleased with their collaborative approach, real-time reporting and clearly explained recommendations.”
Richard Tilling, Data Protection and Information Security Manager - Lifetime Training
“Communication throughout has far exceeded my expectations. It’s very refreshing to be able to see exactly what progress has been made during the testing. Being able to see what is currently being tested and getting an early indication as to potential issues is paramount.”
CISO of a Hedge fund with 10+ Billion of assets under management
“We do a lot of web app testing annually and have trialled lots vendors over the years. What sets OnSecurity apart is how flexible their platform makes pentesting. They are much less rigid around rescheduling and willing to work in small chunks during the build cycle. This ability to call on them as-and-when made them feel part of the dev team.”
Ben Francis, Head of Security & Operations - giffgaff
“We've used OnSecurity to conduct penetration testing on our web applications and public facing API as well as social engineering testing that looked at the security of our operations team. We've been impressed with how thorough and knowledgeable the OnSecurity team have been. They have been mindful of our needs as a startup and helped us focus our testing efforts in the right areas.”
David Genn, CEO - Goji
“Hollywood Bowl engaged with OnSecurity, as we needed some guidance and expertise in developing a penetration testing strategy. Their in depth knowledge and strategic approach to testing was just what we required. They are thorough, very professional and their tools and reports are easy to use. They keep in touch regularly, even in between testing cycles and are always on hand to help and offer advice.”
Dave Wilson, IT Director - Hollywood Bowl Group

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