The question “is the application secure?” is too broad to answer alone. Verification standards like ASVS split it into testable areas such as identity, sessions, access, validation, cryptography and error handling.
Adapt the checklist to the project
Not every project applies all items at the same depth. A public content site and an admin dashboard processing financial transactions carry different risk levels. First understand assets and threats, then pick the right verification level.
Areas to look at first
- Password, MFA and session lifecycle.
- Object-level authorisation and tenant boundaries.
- Input validation and safe error messages.
- Storing and rotating secrets.
- File upload, webhook and external service security.
- Logs not leaking sensitive data.
Documentation is part of the control too
As much as a rule being applied in code, how it will be verified must be written down. Test, code review, automated scan or manual scenario — every control’s evidence must be defined.
Security must spread across development
Do not turn ASVS into an Excel file opened only before launch. Spread it as small checkpoints into requirements, design, code, test and operations steps.