Definition
Threat modeling is a structured process for identifying potential threats and vulnerabilities within a system, application, or process. It involves analyzing how an attacker might compromise the system, what assets are valuable, and what countermeasures can be implemented to mitigate risks. This proactive approach helps in designing more secure systems from the ground up by understanding potential attack vectors and weaknesses. Threat modeling is crucial for building robust security into software development lifecycles and operational environments. For instance, a web application developer might threat model user authentication to prevent credential stuffing attacks. Unlike a simple vulnerability scan which identifies known weaknesses, threat modeling anticipates novel attack methods based on system design. This concept is fundamental for certifications like CompTIA Security+ and CISSP.