OSSTMM Penetration Testing Providers

The Open Source Security Testing Methodology Manual (OSSTMM) is a peer-reviewed methodology for performing security tests and metrics, developed and maintained by the Institute for Security and Open Methodologies (ISECOM). Unlike other testing frameworks that focus primarily on finding vulnerabilities, OSSTMM takes a scientific approach to security testing by measuring the actual attack surface and quantifying security through its Risk Assessment Values (RAV) scoring system.

OSSTMM version 3 defines five channels of security testing: Human Security, Physical Security, Wireless Communications, Telecommunications, and Data Networks. Each channel is tested for operational security, controls, and limitations using a consistent set of testing modules. The methodology's emphasis on measurable security outcomes rather than subjective risk ratings makes it particularly valuable for organisations that need to demonstrate security improvements over time or compare security posture across different systems and environments.

OSSTMM's comprehensive scope, covering physical, human, and technical dimensions, makes it well-suited for organisations seeking a holistic security assessment rather than purely technical testing. The methodology is freely available under a Creative Commons licence, and its structured approach to quantifying security helps organisations move beyond checkbox compliance toward genuine security improvement.