The one Intruder you can trust
Proactive exposure management for lean security teams.
Trusted by 3,000+ security and IT teams




























































Our Mission
Our Story
Intruder was founded in 2015 to help solve the information overload crisis in vulnerability management. Having worked both as an ethical hacker for tier one companies, and for blue teams defending critical national infrastructure, Founder Chris Wallis noticed that while vulnerability management tools were great at finding issues, they were less useful when it came to prioritizing them, tracking them, and timely alerting when problems arose. Quite simply - the most important issues were often getting lost in the noise.
Intruder's mission from day one has been to help divide the needles from the haystack, focusing on what matters, while ignoring the rest. Effective cyber security is about getting the basics right. Intruder helps you do that, saving time on the easy stuff, so you can focus on the rest.
Since its inception in 2015, Intruder has been awarded multiple accolades, was selected for GCHQ's Cyber Accelerator, and was included on Deloitte's Tech Fast 50 2023 list as the fastest-growing cybersecurity company in the UK. It is now proud to have over 3,000 happy customers all over the world.
Key Milestones
Leadership team




Company values
We enjoy the journey
Yes, we want to build the best company in the world, but how we get there matters. It’s about the journey as much as the destination.
We focus on creating value
We spend our time wisely on the things that matter the most to our customers, colleagues, and Intruder.
The best idea wins
We listen to our colleagues and we let the best ideas rise to the top, wherever they come from.
We achieve big things in small steps
The only way to eat an elephant is one bite at a time. We build great things in small achievable pieces.
We respect each other
Everyone's input is valued, respectful discussions, solid reasoning, and learning from mistakes.