Security is not a feature that should be added at the end of development. Secure software starts with architecture, identity design, and careful data handling.
Common risk areas
- Unclear permission rules between users and roles.
- Relying on the frontend to protect sensitive data.
- Weak input validation inside APIs.
- Lack of logs and monitoring for unusual behavior.
Building a secure foundation
Start with a clear access model, encrypt sensitive data, protect sessions, review dependencies, and run security checks before and after launch.
The best time to fix a security issue is before it becomes part of production user experience.
