OPST (Open Platform Security Testing)

The term "OPST" stands for OSSTMM Professional Security Tester. It's a certification program that focuses on security testing methodologies and best practices, based on the Open Source Security Testing Methodology Manual (OSSTMM).

Unlike certifications that may focus on a single type of testing, the OPST credential validates a professional's ability to perform a comprehensive security assessment that covers a wide range of areas. The certification, offered by the Institute for Security and Open Methodologies (ISECOM), emphasizes a scientific, measurable approach to security testing across five key channels:

• Information Security: Protecting data from unauthorized access or modification.
• Process Security: Ensuring secure operations and incident response procedures.
• Internet Technology Security: Assessing vulnerabilities in networks and hardware.
• Communications Security: Securing data transmitted over various media.
• Physical Security: Evaluating access controls and physical locations.

Example: A company is preparing to launch a new, highly secure data center. They hire an OPST-certified professional to conduct a security audit. Instead of only performing a traditional penetration test on the network, the OPST professional uses the OSSTMM methodology to conduct a holistic assessment. They would test not only the company's internal network for vulnerabilities but also evaluate the physical security of the data center, such as access controls and surveillance systems. They might even perform a social engineering test on the staff to gauge their security awareness, providing a comprehensive report on the company's overall security posture.