> we are woolves <

Your sheep in wolves' clothing

We are Woolves, a pack of ethical hackers working with you to hack your systems before someone else does.

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Why wait for a data breach when you can proactively seal the digital dikes?

Our mission

Ethical hacking that is structural, scalable, and accessible for every software team.

the new standard in pentesting

Why we built Woolves differently

We’ve seen how pentesting often works in practice:

long waiting times, complex scoping, limited capacity, and a report that ends up in a drawer.

Findings can be hard to interpret. Fixes aren’t always revalidated. Security becomes a moment in time, not a continuous improvement process.

We believed it could, and should, work differently. Woolves combines a scalable platform with ethical hackers who collaborate directly with your team.

Clear communication. Real context. Ongoing visibility. Not a snapshot. A structured, evolving approach to stronger software.

why choose woolves >>

Knowledge that compounds

Every test is a learning moment. We share context, reasoning and best practices so your developers grow stronger, and vulnerabilities don’t return.

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Security as a continuous discipline

Real security isn’t reactive. It’s structured, measurable and built into how software is created. Release after release.

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Embedded expertise

Security works best when it’s integrated into development. Our platform and ethical hackers operate as an extension of your team, not as a distant vendor delivering reports.

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Scalable by design

From one-off pentests to continuous and 24/7 models, our approach adapts to your product, your roadmap and your growth.

Meet the pack

We’re security entrepreneurs, ethical hackers and engineers who believe software should be secure by design. Not secured once a year.

Human, approachable and embedded in your process, we help teams build stronger foundations with every release.

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Wouter Vreeburg

Co-founder & CEO

Founder of Fendix, a fast-growing, next-generation security consultancy built on smart processes and top technical talent. At Woolves, Wouter drives execution and growth, turning vision into scalable, high-impact security solutions.

wouter@woolves.io

Mathijs Oppelaar

Head of Operations & Partner

Mathijs ensures Woolves runs with precision and clarity. With deep expertise in cybersecurity, compliance and IT, he translates complex security challenges into structured, scalable operations.

mathijs@woolves.io

Joeri van de Watering

Co-Founder & Strategic Advisor

Serial cybersecurity entrepreneur and driving force behind Woolves’ vision. Joeri focuses on redefining pentesting into a scalable, continuous and developer-centric security model.

joeri@woolves.io

Ruben Rentenaar

Marketing Specialist

Kilian Houthuijzen

Account executive

Gijs Nabuurs

Marketing Specialist

Jelle van Onna

Security Consultant

Amber Meter

Finance & HR

Ruben den Dulk

Privacy Consultant

Rivam Bhavsar

Account Security Engineer

The pack

40+ Security Engineers

Michel Roth

Project Engineer

the rest of the pack

An international team of ethical hackers

Behind the platform is a growing group of 50+ ethical hackers who develop and share knowledge together. They do not work anonymously, but as partners contributing to safer software.

Rethinking how security should work

Beyond the checkbox

As security entrepreneurs, we saw a pattern: traditional pentesting often becomes a compliance exercise.
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A report is delivered, a box is checked, but little actually changes.

We believe security should create real, structural improvement.

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Built for long-term impact

Woolves combines human expertise with a scalable platform model.
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Instead of isolated tests, we enable ongoing collaboration, shared visibility and measurable progress, so security evolves with your product.

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Strengthening teams, not just systems

True security isn’t just about finding vulnerabilities. It’s about helping developers understand, improve and build more secure software over time.

Our mission is simple: make software safer everywhere by making teams stronger.

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These organizations have already been hacked by us

Organizations across various sectors work with Woolves to reduce their digital risk.

“We originally booked a one-off pentest to prepare for compliance. But during the process we realized security shouldn’t be a once-a-year exercise. Woolves helped us understand our attack surface much better, and their platform makes vulnerabilities clear and actionable for our team. We’ve now added Woolves 24/7 monitoring to continuously track new risks and exposures. It gives us peace of mind knowing we see potential issues before attackers do.”

Founder

Workflow Heroes

“As a platform handling integrations and customer data, security is critical for us. What we liked about Woolves is that they work differently from traditional pentesting firms. Their platform gives us visibility into findings, retests and fixes in one place, and their hackers communicate directly with our team. Instead of receiving a report that disappears in a drawer, we now treat security as an ongoing process. It fits much better with how modern platforms evolve.”

Head of Engineering

Go-Tickets

“We deploy continuously, sometimes multiple times per week. A traditional pentest simply didn’t fit our pace. We initially started with a one-off test through Woolves to validate our architecture. What stood out was the direct collaboration with their hackers. Instead of a static report, we had real conversations about vulnerabilities and fixes. That’s why we moved to Pentester-as-a-Service. Now Woolves tests alongside our releases, and our developers get feedback while they build.”

CTO

GOOSE VPN

“At Guardey we deploy every two to four weeks, so a once-a-year pentest simply doesn’t fit our pace. Traditional pentests often end with a report developers learn little from. With Woolves’ Pentester-as-a-Service our releases are tested continuously, giving our team feedback while they build. Combined with Woolves 24/7 monitoring we now see new risks early, as our platform evolves.”

CTO

Guardey

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Make your software safer and your team stronger

Schedule a demo and see how continuous security becomes a natural part of your development process.