Pentesting according to Open Source Security Testing Methodology Manual
The Open Source Security Testing Methodology Manual (OSSTMM) is a publicly available standard for structured security testing. Maintained by ISECOM, it follows a highly formalized and academically driven approach aimed at making security measurable and comparable.
OSSTMM takes a holistic view across multiple channels, including human, physical, wireless, telecommunications, and data networks. It provides a broad model for assessing security across different attack surfaces.
In practice, OSSTMM is primarily used as an academic and conceptual reference framework. Its focus on metrics, objectivity, and reproducibility results in a theoretical model, while concrete testing procedures and technical depth are only partially defined.
Due to its complexity and overhead, OSSTMM is rarely applied in full. Real-world penetration testing typically relies on more pragmatic approaches and hands-on experience.
Exfilion values the structured thinking behind OSSTMM, but places a clear focus on practical execution and real attack scenarios. What matters is not formal measurability, but technical validation through actual compromise.
OSSTMM defines a model. What matters is real-world exploitability.
Competence
Exfilion testers deliver proven offensive capability, not theory. Our team consists of experienced hacking experts with hands-on certifications such as
OSCP (Offensive Security Certified Professional),
CRTO (Certified Red Team Operator), and
BACPP (Binsec Academy Certified Pentest Professional).
Together, the Exfilion team combines decades of experience in offensive assessments, red teaming, and deep technical analysis. This experience was built under real-world conditions and not in lab environments.
Pentest Guidelines
Standards are the baseline. Exfilion goes far beyond.
Standards and regulatory frameworks define the minimum. They outline what should be tested, but not how far a real attack can go. They provide structure, but not security.
Many assessments stop where requirements are fulfilled. Checklists are completed and controls are marked as compliant. This is where blind spots emerge, because real attackers do not follow standards, they follow opportunities.
Exfilion uses standards as a starting point, not a boundary. Through experience, technical depth, and creative offensive approaches, we go beyond them to uncover vulnerabilities that remain invisible in conventional assessments.
Your provider for OSSTMM Pentest
Exfilion stands for deep technical, manual penetration testing at elite level with a clear focus on real attack paths. We do not operate by checklist and not in the style of traditional pentest providers. Our objective is to realistically compromise systems and expose their true attack surface under real conditions. Exfilion is the specialized provider in Germany for OSSTMM penetration test at elite level.
