Threat Modeling Methodologies and Methods
What Is a Threat Modeling Methodology?
A threat modeling methodology is a structured approach used to identify, analyze, and mitigate security threats in applications and systems. Many methodologies—such as STRIDE, PASTA, OCTAVE, and VAST—have been developed in recent decades, each blending their own unique processes with generally accepted principles. Typically, a given methodology focuses on different aspects of attacks and weaknesses, such as adopting an attacker’s perspective or using a business-centric lens. Some of the more common methods employed include attack surface analysis, process and data flow diagrams, risk management frameworks, and threat modeling workshops.
Why Is It Important?
Threat modeling is crucial for building strong, proactive security postures, thanks in part to the structural and analytical rigor that these methodologies and methods provide. Instead of mitigating vulnerabilities, misconfigurations, or areas of exposure after they have been discovered, threat modeling methodologies focus on identifying and remediating risks prior to impact. This enables security flaws to be proactively resolved during application and code design, which is generally less expensive and easier to address when found before deployment or production. Additionally, the scope of many threat modeling approaches can extend beyond systems and applications to the software development lifecycle.
What Are Some Key Considerations?
Much as with threat intelligence frameworks and threat libraries, threat modeling methodologies help make sense of chaotic risk environments, improving identification and response times as well as decision-making. A threat modeling methodology is the foundation for a comprehensive assessment of individual applications and systems in the larger context of architectures, processes, and business priorities. As such, threat modeling methodologies can foster closer collaboration between security teams and non-security stakeholders as well as a broader cultural shift toward secure-by-design principles.
How Does It Apply to Threat Modeling?
Threat modeling methodologies are the backbone of modern threat modeling solutions, providing a structure for a platform to follow. These methodologies differ in scope, focus, and threat identification capabilities, leading to variations in threat modeling outcomes. To ensure effective results, it’s best practice to align your threat modeling approach with your business objectives and the specific parameters of each methodology.
Closing
Threat modeling methodologies are a fundamental component of today’s solutions and offer a structured approach that guides the identification, analysis, and mitigation of application risks. These methodologies vary across platforms, each offering unique advantages and considerations. To explore the different approaches in more detail, visit the following glossary pages: STRIDE, PASTA, OCTAVE, and VAST.