OCTAVE (Operationally Critical Threat, Asset and Vulnerability Evaluation)
OCTAVE (Operationally Critical Threat, Asset and Vulnerability Evaluation), developed at the CERT Coordination Center at Carnegie Mellon University, is a suite of tools, techniques and methods for risk-based information security strategic assessment and planning.OCTAVE defines assets as including people, hardware, software, information and systems. There are three models, including the original, which CERT says forms the basis for the OCTAVE body of knowledge and is aimed at organizations with 300 or more employees; OCTAVE-S, similar to the original but aimed at companies with limited security and risk-management resources; and OCTAVE-Allegro, a streamlined approach to information security assessment and assurance.
The framework is founded on the OCTAVE criteria—a standardized approach to a risk-driven and practice-based information security evaluation. These criteria establish the fundamental principles and attributes of risk management. The OCTAVE methods have several key characteristics. One is that they're self-directed: Small teams of personnel across business units and IT work together to address the security needs of the organization. Another is that they're designed to be flexible. Each method can be customized to address an organization's particular risk environment, security needs and level of skill. A third is that OCTAVE aims to move organizations toward an operational risk-based view of security and addresses technology in a business context.
Among the strengths of OCTAVE is that it's thorough and well documented, the people who put it together are very knowledgeable, and it's been around a while and is very well-defined and freely available. Because the methodology is self-directed and easily modified, it can be used as the foundation risk-assessment component or process for other risk methodologies. The original OCTAVE method uses a small analysis team encompassing members of IT and the business. This promotes collaboration on any found risks and provides business leaders [with] visibility into those risks. To be successful, the risk assessment-and-management process must have collaboration. In addition, OCTAVE looks at all aspects of information security risk from physical, technical and people viewpoints, If you take the time to learn the process, it can help you and your organization to better understand its assets, threats, vulnerabilities and risks. You can then make better decisions on how to handle those risks.
Experts say one of the drawbacks of OCTAVE is its complexity and the fact that it doesn't allow organizations to mathematically model risk makes it a clearly a qualitative methodology.
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