Find out just how far an attacker can really get

Red Teaming

Are you sure your security systems will detect a targeted attack in time? With OneXillium’s Red Teaming, we conduct a controlled yet realistic attack simulation using the latest attack techniques that criminals are currently employing in your industry. This reveals whether your monitoring, detection, and response processes are functioning correctly and whether your defenses can truly withstand modern threats.

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Tailored to your industry

Red Teaming

From regulations to sensitive data: every industry has its own unique requirements. Our approach adapts to meet those needs.

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OneXillium x Housing Associations

Tenant portals, systems, and integrations make your services more efficient, but also more vulnerable. Red Teaming simulates targeted attacks on these critical links. Find out where you really stand and prevent attackers from gaining access sooner than you think.

OneXillium x Financial Services

Sensitive customer data, DORA obligations, and strict compliance requirements call for demonstrable resilience. Red Teaming shows whether you’re truly compliant and how your team responds to attacks.

OneXillium x Government

From e-government requests to digital permits: government agencies process sensitive information under intense pressure and strict regulations. Red teaming reveals whether your processes can withstand attacks—both from outside and from within. Make your information security demonstrably effective.

OneXillium x Trade & Industry

Complex chains and fragmented systems leave you vulnerable. Red Teaming tests how attackers can gain access through email, data, or employees. Prevent abuse and errors in your information chain.

Benefits for Your Organization

A Realistic Understanding of Your Resilience

Our hackers simulate attacks by exploiting technical vulnerabilities, human interaction, and physical access attempts. This helps you identify blind spots that aren't apparent on paper.

Confrontation Without Damage

Everything takes place in a safe and controlled manner, without posing any risk to systems, data, or service delivery. Your team will experience a realistic threat through both digital and physical attack attempts, but without causing any actual damage or disruption to your service delivery.

Practical Areas for Improvement

Not a vague report, but concrete recommendations tailored to your processes, people, and systems.

Peace of mind for executives

As a manager or IT administrator, demonstrate that your organization is verifiably prepared, including documentation.

Our Red Teaming Approach in 3 Types of Attacks

Each test simulates a different type of threat, just like a real attacker.

In-Person Physical Test

Physical penetration tests reveal whether existing processes and security measures can be circumvented. Our specialists attempt to gain access to sensitive information, restricted areas, or systems (e.g., via a USB backdoor). The results are shared along with supporting evidence and discussed with employees to raise awareness and strengthen physical resilience.

Social Engineering

We simulate realistic attacks via email or phone. How do your colleagues respond to a convincing attempt to gain access? The results will help you raise security awareness and build an alert, resilient organizational culture.

Black-Box Penetration Test

Our ethical hackers attempt to breach your digital environment without prior knowledge, just as real attackers would. We identify your vulnerabilities and determine how far an attack could go. The result? A realistic picture of your digital resilience, backed by incisive analyses.

The Teams

Red Teaming is a cybersecurity approach that focuses on testing security systems and identifying vulnerabilities by assigning different roles to various teams.

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Red Team

The Red Team consists of ethical hackers who simulate attacks to identify security vulnerabilities.

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Blue Team

The Blue Team is responsible for protecting the organization from the Red Team.

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Purple Team

The Purple Team works with both Red and Blue to identify vulnerabilities and implements real-time improvements.

White Team

The White Team acts as an independent observation team and provides assessments and advice during security tests.

Why Choose Red Teaming at Onexillium?

Working Digitally and Safely

Through ethical hacking, strategic consulting, and hands-on training, we strengthen your digital resilience. We actively share our knowledge at leading security conferences in the Netherlands.

Independent specialists

Our vetted, certified, and trained hackers act like real attackers, using new attack techniques—but in a safe and customized manner.

True collaboration

It doesn’t end after the test. OneXillium provides a clear report detailing attack scenarios, vulnerabilities, impact, and practical recommendations. We review the results together and advise on structural improvements that will immediately strengthen your organization.

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Frequently Asked Questions About Red Teaming

Our specialists have compiled a list of frequently asked questions for you. If your question isn't listed here, please contact us.

Depending on the complexity, duration, and objectives. A project starts at a few thousand euros. You will always receive a customized proposal.

On average, 2–6 weeks, including preparation, implementation, and reporting, depending on the scope.

All activities are carried out safely and under supervision, with minimal impact on your systems, data, and services. If the Red Team gains access to sensitive systems or information, this is reported immediately. No actions are taken that cause damage or alter data; the Red Team only observes and reports. Everything is done within the pre-agreed limits and in accordance with ethical guidelines.

Red Teaming is not generally required, but it does support compliance with ISO 27001, DORA, and other frameworks. It is often requested in solicitations and audits, and is required under DORA for designated significant financial institutions.

A Red Team test is always coordinated with the client. A small core team needs to be in the know, but the fewer employees who know about it, the more realistic the results will be.

Choose a penetration test if you want to know whether specific systems or applications are vulnerable.

Choose RedTeaming if you want to test how well your entire organization—including detection and response—holds up against a realistic attack.

Organizations that handle sensitive data, have compliance requirements, or operate critical processes.

Simulate realistic attacks to uncover vulnerabilities in people, processes, and systems. This gives you insight into how effective your detection and response mechanisms are.

Find out what OneXillium can do for you

Ready to test your digital resilience?

At OneXillium, you won’t get a generic report or technical jargon, but clear recommendations tailored to your industry, systems, and compliance requirements. From start to follow-up, we guide you in a focused, secure manner—with no surprises.

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