Penetration Testing

Cyber Security

Our Penetration Testing service is designed to uncover what others miss before an attacker does. YieldDD specializes in code-guided penetration tests for the most in-depth insights.

Why penetration testing matters

The cost of untested security is steep. Vulnerabilities in your applications, APIs, or infrastructure can open the door to data loss, regulatory scrutiny, and reputational damage. No matter the stage of your business, a penetration test helps identify these vulnerabilities and risks.

Penetration testing is more than a simulation, it’s a controlled, expert-driven attack on your systems, applications, or infrastructure. A well-executed penetration test transforms uncertainty into clarity. It gives you a detailed, independent, and prioritized view of your real-world exposure, turning risk into an opportunity to harden your environment, earn stakeholder trust, and increase enterprise value.

Code-guided, context-aware penetration testing

YieldDD conducts penetration tests on environments you specify, from public-facing applications to APIs and internal systems. We identify vulnerabilities based on the OWASP Top 10 and SANS/CWE Top 25, ensuring your systems are hardened against the most critical and commonly exploited weaknesses. Our approach is methodical, standards-driven, and tailored to your risk profile.

We recommend and specialize in code-guided penetration tests, in which we have full infrastructure, system, and source code access for the most in-depth inspection of application logic, authentication flows, and data-handling mechanisms. This comprehensive approach aligns closely with white-box (or crystal box) testing standards.

It allows us to zoom in on the security problems faster, more completely, and more directly. This gives you an extensive overview of insights aligned to your business context.

Furthermore, we offer gray-box (Limited access to test authenticated parts of the system and simulate real-user threat scenarios) and black-box (no prior information or access; mimics an external attacker) penetration testing.

We don’t just report - we interpret and guide

We don't stop at identifying vulnerabilities. We go further, providing context, interpretation, and a clear path forward. Our final deliverables include:

Executive summary – Clear, concise, and designed for decision-makers.
Technical findings – Detailed breakdowns of each vulnerability, how they were discovered, and how they can be exploited.
Risk prioritization – Mapping issues to business impact with practical, risk-ranked recommendations.
Remediation guidance – Potential scenarios and advice tailored to your architecture and development practices.

You will be in the hands of our expert team based in the Netherlands. The security experts are certified, have strong communication skills, and can translate complex issues into practical, business-aligned decisions.

With YieldDD, security becomes more than a static audit. It becomes dynamic risk management, a lever for value.