Threat modelling is a systematic approach to identifying, documenting and evaluating potential threats and vulnerabilities in a system, application or process. Methodologies such as STRIDE, PASTA and attack trees help teams think like adversaries to uncover weaknesses before they can be exploited. It is most effective when applied early in the design phase and revisited throughout the development lifecycle as the system evolves.
By proactively identifying where an attacker is most likely to strike, threat modelling enables teams to implement targeted security controls and make informed design decisions. It fosters a security-first mindset across development and operations teams. The outputs of threat modelling exercises also serve as valuable documentation for auditors, regulators and security assessments.