It covers first-party code, third-party components, identities, data, interfaces, configuration, deployment, and runtime behavior across web, mobile, desktop, service, and embedded applications. It is an ongoing engineering and governance responsibility, not a final test.
A useful program translates organizational risk into application requirements and repeatable practices, assigns decisions to accountable owners, and feeds production findings back into design and development. The depth of work should reflect the application’s data, privileges, exposure, dependencies, and potential consequences of failure.
Key points
Design and governanceMaintain an application inventory, define security and privacy requirements, model threats and trust boundaries, choose safer architectures, and record accepted risks and exceptions.
Build and supply chainApply secure coding practices, review changes, protect development and release systems, govern dependencies, secure configuration, and produce traceable artifacts.
Verification and operationCombine code review, static, dynamic, and composition analysis with focused manual testing, runtime monitoring, vulnerability handling, incident response, and verified remediation.
Important limitationNo tool, test, framework, maturity score, or release gate can prove that an application is secure. Coverage changes with architecture, environment, attacker behavior, and application evolution.