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We simulate AI-assisted human attacks on your infrastructure — applications, networks, systems, APIs — to reveal hidden weaknesses that real adversaries could exploit.
+$10.5T
World cyber damage in 2025
+$814B
Worldwide ransomware profit
72%
of organizations report that penetration testing helped prevent an actual security breach
72%
of organizations report that penetration testing helped prevent an actual security breach
Our ethical hackers are world top 2%! (TryHackMe.com)
A penetration test is a controlled, ethical simulation of a cyberattack, designed to identify system weaknesses, assess how far a real attacker could go, and determine what must be fixed urgently or strategically.
Define scope and test type (Black Box, Grey Box, White Box)
Gather information and identify entry points
Detect known and unknown vulnerabilities
Simulate real attacks
Assess lateral movement potential
Remove test traces
Focused assessment to identify vulnerabilities in your systems, applications, and infrastructure.
Vulnerability identification, corrective measures implementation, and effectiveness validation.
Tailored attack scenarios, including advanced red team exercises aligned with your risks.
A penetration test, or pentest, simulates a real attack against your systems — web applications, networks, APIs, endpoints — to identify exploitable vulnerabilities before an attacker finds them. You receive a prioritised report: what is vulnerable, how severe, and how to fix it.
The price depends on the scope: number of applications, network size, depth of testing. A bespoke pentest led by our experts is quoted to fit your context. For a recurring, budget-controlled approach, Sentinel Externe automates external penetration testing as a monthly subscription.
Both are complementary. An automated pentest — Sentinel Externe for your exposed perimeter, Sentinel Interne for your network — monitors your vulnerabilities continuously, without waiting for the next audit. A bespoke pentest brings in our experts for complex scenarios (red team, critical business logic) that automation alone cannot cover.
These terms describe how much information the tester is given. In black box, the expert starts with no access, like an external attacker. In grey box, they have an account or limited rights, to simulate a user or partner. In white box, they have access to the code and architecture, for the most thorough audit.
An external pentest assesses what an attacker sees from the Internet: sites, exposed services, data leaks. An internal pentest assesses what they could do once inside: lateral movement, server access, privilege escalation. In practice you often start with external. Sentinel Externe and Sentinel Interne cover both perimeters automatically.
A pentest is a snapshot at a point in time: it becomes partly outdated as soon as your system changes. A one-off test therefore benefits from being complemented by continuous monitoring. Sentinel automates penetration testing continuously, keeping your posture up to date between bespoke audits.
Our tests rely on recognised frameworks: OWASP for web applications, PTES for the process, NIST and MITRE ATT&CK for attack-technique coverage. Every engagement produces a traceable, documented report: vulnerabilities, evidence, severity and a prioritised remediation plan.
NIS2 does not explicitly name the 'pentest', but it requires risk-management measures including regular assessment of the effectiveness of security measures. Penetration testing is one of the recognised ways to provide that evidence. Our Auditor helps you connect your tests to your obligations in a traceable, documented way.
Yes. Based in Orp-Jauche, in Walloon Brabant, we carry out penetration tests for companies across Belgium — Wallonia, Brussels and Flanders — as well as in the European Union. Much of a pentest is performed remotely; we work on site when the scope requires it.
Comment Varden adresse le pentest
Le pentest externe, automatisé et en continu
Deux façons de mener un test d'intrusion chez Varden. Sentinel Externe automatise la reconnaissance, le scan de vulnérabilités, l'exploitation contrôlée et la détection de fuites darkweb — en continu, sans attendre le prochain audit annuel. Pour un pentest sur mesure (red team, applications critiques), nos experts interviennent à la demande.
OSINT (Open Source Intelligence) means analysing only the information about your organisation that is publicly accessible — what anyone, including an attacker, can find without ever touching your infrastructure. No intrusion: open sources only.
Instant full scan. Ethical report, auditable score out of 100, actionable recommendations.
